Image copyright @Angelababyct Image caption Yeung Wing, known as Angelababy, is a popular actress in China, named one of Forbes' 30 Under 30 Asian celebrities in 2016

What's the worst thing you can imagine doing when you're on your period?

For lots of people, dragging yourself to work or school is hard enough when all you want to do is crawl up in bed and eat comfort food.

So picture yourself being drenched in freezing cold water while you're menstruating - while on live TV. On top of that, think about doing it in a country where tampons are barely used.

That's what Chinese actress Angelababy, whose real name is Yeung Wing, was faced with last week during her appearance on popular game-variety show Keep Running.

While other contestants were repeatedly soaked in water, some viewers pointed out Angelababy was doused just once and they trolled her for getting "special treatment".

"Keep Running is not for you, go home and be a princess!" wrote one person, as reported by the Hong Kong edition of Cosmopolitan.

Others laughed at the actress, for having "exaggerated" and unhappy facial expressions during the segment, during which contestants are dunked in water for saying specific words.

Image copyright ZRTG Image caption Angelababy was criticised for her expressions during the TV show

On Sunday the popular actress revealed to her 85m social media followers she had been on the first day of her period during the show. Her post was shared more than 52,000 times and triggered 60,000 comments.

"This was the first day of my period, and I was really uncomfortable.

"But I never said that I couldn't go in the water, it really wasn't fun sitting in that chair.

"I felt cold and frightened because you do not know what words or actions will trigger the water to spray," she wrote on Weibo, China's largest social media platform.

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"All I can do is absorb these evil words and turn them into positive energy," she said in reaction to being trolled.

Breaking a taboo

China is a country where menstruation and tampons in particular are topics which most people feel uncomfortable discussing.

Despite this, many comments supported the actress, who was previously celebrated for returning to the show after a pregnancy.

"Only women understand the pain of women's menstruation, but we women are always striving for perfection. You need a little more love and a little less darkness in your hearts," one wrote.

"It's not easy, really. When you're on your period, it does feel hard, sometimes it's especially painful, so painful that you doubt what you're doing. Going in the water takes an even greater effort, if it had been me, I wouldn't have been able to handle it," commented another.

"This society is too hard on women. Bounce back, baby," another wrote.

However, some criticised Angelababy.

"How do we even know that it's true she was on her period? Is she so easy to believe?" one asked. Another asked why she appeared on the show if she didn't feel well: "Then why participate in this show and go in the water?"

It's the not the first time that talking about menstruation has caused shockwaves on social media in China.

In the 2016 Olympics, swimming star Fu Yuanhui explained that she hadn't performed strongly because she had her period and felt particularly tired.