Twenty -three other women made the police claims against the chain rapist Chenhao Zo – a Chinese doctoral student convicted in London last month of the anesthesia and rape of 10 women across two continents.

The police said at the end of his trial who had video evidence, which was filmed by Zou himself, by 50 other victims – and they were trying to follow these women. However, investigators now say they believe that “the group that violates a much larger Zo.”

Warning: This story contains a description of sexual violence

Last month, two women spoke to the police last month with new allegations to the BBC global service. One of them said that Zhou raped her in his hometown in China, after her drink that left her conscious, but she was unable to speak or move. Others said that Zu also anesthetized – in London – and that she woke up to find him to photograph himself sexually.

We also talked to two women whose testimony helped us to condemn Zu – which will be judged in June. One of them told us: “If you spoke earlier, then there may not be many victims after me.”

She and other women say they are fighting with guilt now, knowing that Zu has assaulted many women.

She told one of the women who are presenting new allegations, calling him Alice, BBC, Zhou had assaulted her in London in 2021, but she only felt to go to the police after his trial last month. The Chinese citizen told us: “I didn’t know that this is something you could report.”

She says she met Zo for the first time while leaving clubs in London with other Chinese students. The group had added each other to the WeChat, which is the application of a famous social correspondence.

Not long later, a joint friend called Alice for drinks at the place of Zou students in Bloomsbury.

She says there are two bottles of lives on the table, as they were already opened and half empty. She started sharing drinks from a bottle with her friend – but she says that Zo drank only from the other.

Alice says that her friend was carrying alcohol well, but this time she became drunk very quickly and it seems that she was falling asleep on the ground. She says alcohol suddenly began for Alice as well.

“Usually when you drink too much, you feel satisfied for a while. But that night I felt very dizzy and drowned immediately.”

Zo told us, it would not be safe to take a taxi to the house in the state in which she was, and asked her to take a nap in his bedroom. She says she agreed, knowing that her friend was still in the apartment.

The next thing that you remember is to wake up to remove its pants.

She says, “I immediately stopped him,” she explained how she then noticed a lamp from a mobile phone over her head, and realized, her horror, that he was filming her.

Alice describes attempting to leave his bedroom but “grabbed strongly from the entrance.” She says that Zu used this powerful force to try to keep it in the bedroom, as she had to cling to the door frame with both hands.

Only when I threatened to scream for help, told us – told us – with Zu, then I told her not to make a “big deal” of things, or go to the police.

She says Zo called Alice the next day on WeChat, but he did not mention the night before. She asked her to have dinner, but she says she ignored her and was never in contact again.

Alice confirmed in a few close friends, but she did not take things further.

“I thought, first, you needed evidence. Second, there was a fundamental thing that happened before you could contact the police.”

Alice says the next time that Zu’s face saw about four years later in the media – after the police accused him.

Sarah Yahi, a guardian of the Women’s Association in Southeast and East Asia in London, says it is difficult for foreign citizens to report sexual crimes in the United Kingdom.

“It will be arduous to anyone [from] She told us: “You must be shocked by rape and then have to move in the British legal system and NHS, or even reach the services provided to the victims.”

They may not understand their rights or what are the resources available to them – as you say – in addition to concern about the repercussions, the negative effects of their studies, the shame that brought themselves and their families, and potential legal challenges.

About a year after Alice says she was attacked, she discovered that one of her male friends in London also knew Zu, but he cut all the call because he discovered that Zu was extending the woman’s drinks.

The friend – who calls BBCG – told us that he “was not surprised at all” when he heard that Zu had been convicted.

“Perhaps many friends know at that time [what Zou was doing]. I think some of our female friends knew also. “

Ji told us that he accidentally drank from a cup of someone else at a party in 2022, and then became “fine” and “very soft”. Zo then told him that the drink rose – Ji says – and he meant a woman at the party to drink.

Ji Zo says later showed him a small bag of drugs and asked if he wanted to “cooperate with him.” He says he took from this that Zu wanted to help him find girls to drink. Ji says he refused.

BBC asked about a reason that he initially continued to see Zo and why he did not go to the police. Ji told us that both of them had many participating friends, so it was difficult not to communicate together. He says he warned his friends against Zu, and told them not to accommodate him, “because he was relieving people.”

He says that Ji does not like to think about those memories, and for this reason he did not go to the police – adding that he believed that the woman’s testimonies were sufficient to condemn Zu.

In the end, Ji says, he cut all relationships with him.

Another young woman has been in contact with the police in London and China since the trial of Zu is “Rachel”. She says she was exposed to anesthesia and was raped by him in 2022 in his hometown of Dongguan – in Guangdong Province.

Rachel BBC told that she went on a date with Zo, after she met him online. I thought they were going to a bar, she says, but she ended in his home – a large villa that Zu described as one of his many family’s characteristics.

As his back turns to her, Zu says mixed green cocktail. Then they started a drinking game, as you say, and witnessed a “wave of rotor”. Rachel told UK police that Zu took her to a bedroom, where she was unable to speak or move her body, and then raped her.

I thought about contacting the police the next day, but she decided against him. She was afraid that it would be very difficult to prove lack of approval. She told us: “It is difficult for me to prove the fact that I was ready to go to his place for drinks and it was not a sign that I was agreeing to have sex.”

She added that Dongguan is a small place and there was always a danger that the people I knew – her parents, relatives and colleagues – would discover and believe that it was “unlimited.”

• Help and support details are available with sexual violence in BBC Line

We have seen Rachel’s UK police statement. She wants to hear her story now, she says, to encourage more victims to progress – and because she wants to see a trial in China as well as the United Kingdom.

“The BBC officers are still on their way during the new 23 potential cases and that” some people were certainly not identical “for those who appeared in secret clips of Zu or from the charges to a large extent.

He says: “He talks about the fact that his violation group is much greater than what we realized.”

He adds that the second trial of the convicted rapist has not been excluded, and there is certainly a “issue” to discuss the prosecution service in the Crown Prince, given the numbers of advanced women.

The British Broadcasting Corporation also spoke to the only two victims that the police managed to identify the trial of Zu – both of whom were a Chinese citizen who were studying in London. Women got to know each other on social media after one of them, whom we call Beth, published her experience.

Beth was raped by Zo in 2023 and tried to report the crime to the Capital Police shortly. But then she decided not to follow things because she felt that she was not sure of the UK law and left her frustration after her initial interaction with the police, which included a bad translation of her invitation 999.

“At that time I didn’t know [Zou’s name]. I did not know his address, I can only give general information. “

In frustration, Beth published a social media warning about what happened to her. Another Chinese student, Clara, says she is “immediately” that this is the same man who was exposed to her anesthesia and raped her after a night in the Chinese neighborhood in London, two years ago.

Clara says that all the details of the Beth Publication referred to the same man: “He has the tone of Guangdong, who looks honest and wears a Rolex’s submarine watch.”

Women started talking online and encouraged Beth Clara to report what happened to her to the police.

Months later, Police contacted Beth to say they were re -creating the case. Clara offers.

On the Zou devices, the police also found a video of Beth.

MET has since expressed regret how she treated her allegations at first.

“We want to avoid the situations in which the victims feel that they may not be taken seriously, or not allow the sky, and the infidelity,” says CDR Southworth. He says that additional training is now being offered to all front lines officers.

Clara describes a positive experience with the British police. She says she does not want to travel to London to trial, if her parents are discovered, so MET has sent two officers to China to support her because she provided video evidence instead.

The officers were assisted by the Chinese authorities, who were working cooperatively with MET and “very supportive”, says CDR Southworth.

“I hope this can provide some encouragement to the victim of the corners, wherever they are in the world, that you are safe to progress.”

Beth – who gave her evidence in the court in London – says that only after that she realized that she was the only two women who helped condemn Zu.

“I have long thought that I was not an important part of the case against Zu,” she says.

Now she is happy because she has seen and encourages other women to progress.

If you have information about this story you want to share with us, please call.

You can contact the BBC journalist wanqing.zhang@bc.co.uk Please include contact details if you are ready to talk to it.