At a popular cafe in central Berlin, Weidel is explaining how the teachings of Confucius influence everything in modern Chinese society from the failure of pro-democracy protests in Tiananmen Square in 1989, to the recent execution of a police chief on graft charges.
She has already cleared up the differences between the Beijing and Shanghai dialects, and detailed the astonishing lengths the government went to to give Beijing a face-lift before the 2008 Olympics.
If you don’t know who Weidel is, you might be surprised to learn she was picked in April to stand alongside party-deputy Alexander Gauland as Spitzenkandidatin (lead candidate) for the Alternative for Germany (AfD) in September’s national election.
She has a doctorate in international development and speaks conversational Mandarin Chinese after years spent in East Asia. Now back in Germany, she lives with her female partner and their two children on Lake Constance.
But while this might look like the CV a liberal party would drool over, as soon as conversation turns from China to refugees, Islam and gender, sparks start to fly.
'The only real opposition'
Laying out her pitch for why people outside Germany should give her party a hearing, Weidel says that “the AfD is the only real opposition party which stands up for the rule of law, in Germany and in Europe.”
“On the European level the bailouts [of Greece] have breached the Maastricht agreement, and it's no bailout clause. The ban on bond buying by the European Central Bank has been breached. We are the only party talking about this – this is, by the way, the reason that we were founded.”
The AfD is the youngest party on the German political scene, having been set up by a group of economists as a protest party against the Euro single currency in 2013.
“The AfD is also the only party which calls for referendums, meaning direct democracy… and then there is the migration crisis,” Weidel adds.
If there is one topic which connects the worldly Weidel with the rank and file of the AfD more than any other, it is likely her burning anger at Angela Merkel's decision to open Germany's land borders to refugees in August 2015.
August 2015 was also a turning point in the short history of the AfD. While the party was languishing under the five percent mark necessary to make it into the parliament over the summer, the sudden arrival of tens of thousands of asylum seekers every day in the autumn sent worried voters flocking to them, as they declared war on Merkel's open-door policy.
“It just can't happen that the state gives up control of its own borders,” Weidel says. “That is a contravention of German asylum law.”
She explains that allowing people to arrive in Germany via neighbouring countries such as Austria breaches Paragraph 16a of the German asylum law, whereby refugees cannot apply for protection in the Bundesrepublik if they arrive from another country that adheres to the Geneva Convention on refugees.
“Since September 2015, we have had a policy of open borders without legal basis. It is an exceptional circumstance which didn't even receive the approval of the parliament. It was just done. In an emergency you can do that – for a few days to absorb the shock – but not for one and a half years,” Weidel says.
It's worth noting that in August 2015, Germany suspended the so-called Dublin rules for Syrian refugees, which state that refugees must apply for asylum in the EU country where they first arrive. A few months later in November that year, Germany announced it would reinstate the rules, except for those who arrived in overwhelmed Greece, which has been one of the main ports of entry into the EU.
Then in March of this year, the government again started returning asylum seekers to Greece.
Germany's asylum policies, Weidel argues, have had several negative effects, including heightening the risk of terrorist attacks taking place in Germany.
But it also encouraged countries on the periphery of the EU, such as Greece and Italy, to stop securing their external borders and to simply send migrants and refugees on to Germany, according to Weidel.
'Merkel is insane'
What Germany should have done instead of opening its borders was “massively invest” in the UN Refugee Agency and in countries neighbouring Syria such as Jordan, says the AfD leader.
“They could also invest in special economic zones in the region so that people aren't ripped out of their social contexts, which leads to a huge 'brain drain' there.”
But it is clear that Weidel doesn't just have the interests of the Middle Eastern economy at heart.
By adding up asylum seekers, illegal immigrants, and families of asylum seekers who are allowed to join their loved ones at a later date, Weidel arrives at a figure of 8 million new inhabitants of Germany based on arrivals in 2015 alone. (According to official figures 890,000 asylum seekers arrived in Germany in 2015).
“That is completely crazy. That is 10 percent of the German population in one year.”
And her predictions for what that means for Germany are apocalyptic.
“The country will be destroyed through this immigration policy. Donald Trump said that Merkel is insane and I absolutely agree with that. It is a completely nonsensical form of politics that is being followed here.
“Germany needs qualified migrants. The people who have come here as refugees are illiterate, they don't have any training. Eventually they'll have to go back, this just can't go on.”
For Weidel the refugee influx is the result of Germany still not having a law determining who can emigrate to the Bundesrepublik.
“We are the only party calling for an immigration law based on the example set by Canada. We need qualified migration. We are an industrialized nation. We don’t need illiterate people.”
To say that this topic gets Weidel riled up is something of an understatement. She finishes by switching into English.
“I'm sorry but this entire policy is driving me up the wall. It is outrageous what is going on here. We have a completely headless government that has no idea what it is doing. It is acting based on stupidity, ignorance and irresponsibility. You really need to ask, are Germans paying their taxes for this?”
'Stone age Islam'
Migrants unsuited to the German economy aren't the only threat Weidel sees in the mass migration of 2015. The fact that most of the asylum seekers were Muslim also troubles her.
“Of course” Islam poses a danger to Germany, she says.
“There are 1,200 people who pose a threat to the country here, who aren’t being deported. I have to be very honest, from my point of view this country has completely lost control over civil society.”
Arab countries such as Saudi Arabia “have free hand to send their imams to Germany with their stone-age sharia populism to tap into the Muslim population here.”
Meanwhile the fact that the state has given control of Islam classes in schools to Ditib, a religious association tied to the Turkish government, irks her.
“Lessons in Islam should be taught by a department of the German government, not the Turkish one,” she says.
'No racists' in the AfD
As German intelligence has reported a steady rise in Islamist radicalism in Germany over recent years, far-right violence has also risen alarmingly. Police figures for 2016 show a 14.3 percent increase in violent crime by right-wing radicals.
While apparently unaware that right-wing crime is on the rise, Weidel insists that the AfD is a strong voice against the far-right.
“Has violence from the right risen? What is your evidence for that?” she asks, before adding “we condemn right-wing violence very loudly and repeatedly – but this doesn’t fit into our public image and that’s why it doesn’t get attention.”
But opponents of the AfD claim that they have had a hand in stoking right-wing extremism through historical revisionism and incendiary rhetoric.
In a particularly notorious incident, the party leader in Thuringia, Björn Höcke, gave a speech in January describing Germans as “brutally beaten” and criticized the country for building a “memorial of shame” in Berlin – a reference to the Holocaust Memorial. The comments were described as “anti-Semitic and extremely inhumane” by the head of the Central Council of Jews.
In another incident, Alexander Gauland – Weidel's co-Spitzenkandidat – said last year that most Germans wouldn't want national football player Jerome Boateng as a neighbour, a comment which was widely interpreted as a reference to the fact that Boateng is black.
But Weidel denies that her party has a racism problem.
“There are no racists in the AfD,” she claims. “But at the same time one must see that dangerous people have come into the country through the government's open-border policy, even the government admits that one can’t rule out that terrorists have come into the country.”
At the same time Weidel has been at the forefront of efforts to have Höcke ejected from the party.
“There was already a point last year which didn’t get noticed by the press when I thought it was the time to act,” she relates.
“In November he publicly defended an 80-year-old woman, who has been found guilty of hate speech eight times because she denies the Holocaust,” Weidel explains, referring to Ursula Haverbeck-Wetzel. “He shrugged off her Holocaust denial as a thought crime.”
Weidel insists, though, that people “with very different motives” have joined the party simply because it is new.
“They join the AfD because they can. They don't join the Pirate Party because they aren't attractive – they don't have any power.”
“I cannot see the right-wing populism in our party programme. I wouldn’t engage myself for such a party,” she insists.
'I am married'
One of the most interesting things about Weidel and the AfD is that a party which is often characterized as regressive has chosen an openly gay women to lead it.
But it quickly becomes clear that Weidel doesn't see gay rights as a priority topic.
Germany is one of the few European countries where homosexual couples still can't get married, and still have to make do with civil partnerships.
For Weidel though, this is just a debate about words.
“The legal situation is very clear. For gay couples there is civil partnership which entails equal rights on tax and inheritance. And you can adopt step children.”
Pressed on whether this means that she would not support legislation on gay marriage, she responds “for me that [civil partnership] is marriage.”
She is also clearly committed to the AfD's aversion to children being taught about different forms of sexuality early in life, which the party describes as “early sexualization.”
“Do you know what they want to put on the school plan for children up to the age of four? That they should discover themselves and play with themselves. I can tell you, if any teaching authority pushes this syllabus on my children, I won’t stand for it. I don’t want anyone with their gender idiocy or their early sexualization classes coming near my children.”
She doesn't have a problem with children being taught about homosexuality in schools, she insists, but only after they hit puberty.
'A shark tank'
Weidel recognizes that she doesn't have the easiest job in the world, leading the most controversial party in Germany into the national election.
After Höcke's speech in January, polling figures crashed and the party turned in on itself. In April Frauke Petry, the party's high-profile chairwoman, announced she wouldn’t be the Spitzenkandidatin, after reportedly being the victim of an internal coup.
“There are really extreme power politics going on in the AfD at the moment. It really is a shark tank. There are a lot of ideas and characters clashing with one another,” Weidel concedes.
She says she has set a personal target for the elections to win 15 percent of the vote, “but I think realistically we will get at most 10 percent.”
Whether she will still seek to lead the party after the elections is something she is keeping to herself.
“I am really careful about looking ahead. A new party like the AfD is very volatile. Two to four weeks inside the AfD is an incredibly long time – you really can't see what is going to happen.”
Her goal, though, is to knock the party into shape and make it ready to go into a coalition – in other words to become part of the establishment it has railed against over the past four years.
But if she fails in this pursuit, she already knows what she will do. She'll go back to China.