Several Chinese feminist channels on Douban, a popular social networking forum in China, were abruptly shut this week, triggering online anger and prompting calls for women to “stick together”.

Douban has closed at least eight feminist channels, citing extremism, and radical political views and ideological content, women’s rights supporter Zhou Xiaoxuan wrote on social media.

“I firmly support my sisters on Douban, and oppose Douban’s cancellation of feminist channels,” said Zhou, who in 2018 filed a sexual assault suit against a national TV anchor, fuelling China’s #MeToo movement.

Reuters on Wednesday found that the groups mentioned in Zhou’s post were no longer accessible, though other feminist channels and content existed on Douban – one of China’s earliest online forums with discussion channels on a host of themes.

Privately owned Douban did not immediately respond to a Reuters request for comment.

The deleted Douban channels included groups with links to the so-called “6B4T” movement, a variant of feminism originating from South Korea that urges women to refrain from relationships with men, reject religion and stop buying products such as a corset that are hostile to the female gender.

The closures prompted social media users to create new Douban channels in hopes of resurrecting the groups, while the hashtag “women stick together” sprang upon China’s Twitter equivalent, Weibo, garnering almost 50 million views.

“We should stick together,” one Weibo user wrote. “Otherwise ‘The Handmaid’s Tale’ will be our tomorrow.”

In 2015, authorities arrested five activists, later dubbed the “Feminist Five,” who were planning to demonstrate against sexual harassment on public transport. They were released a month later.

“Generally, online platforms conclude that the government dislikes feminism, so they tend to restrict feminism,” New York-based feminist activist Lv Pin told Reuters.