Thousands of people in China are showing off the flexibility of their fingers in a new social media craze.
On Weibo, the Chinese equivalent to Twitter, participants have swarmed to share pictures of them doing difficult hand tricks, such as making their fingers overlapping one another to form a curve.
One challenge, called the 'finger knot', seems particularly popular. The challenge asks web users to make a knot with their fingers, and bonus points go to those who could do the trick one-handed.
Thousands in China are showing off the flexibility of their hands online. Many of them are trying to do a 'finger knot' after a famous anchorwoman, Li Sisi (left), challenged her followers to try interlocking their digits and make a knot. Web users immediately joined in (right)
It's been suggested that a 'finger knot' is not difficult to do, but the catch is to do it one-handed. One web user tries to demonstrate how to achieve the challenge with just one hand
The craze first started last week when a Chinese actor was seen pulling off a rare hand gesture in a popular TV show.
The actor, Zhang Yishan, made a promise to her girlfriend in the show with a hand movement which has been dubbed 'physically impossible' by stunned audience.
The actor raised his right hand, putting his little finger on top of his thumb while keeping the other three fingers dead straight.
The trick might seem easy, but many people said the difficulty is to keep the little finger on top of the thumb, not the other way around.
The challenge involving finger moves first started when Chinese actor Zhang Yishan (right) pulled off a 'physically impossible' hand gesture in a popular TV show. Many people find it difficult to keep the three fingers straight while putting their little finger over the thumb
One web user, who failed to do the trick (pictured), said her hands looked like 'chicken feet'
A topic page about the hand challenge was quickly set up on Weibo last week.
People flocked to upload pictures of themselves trying to pull off Zhang Yishan's hand trick. Some managed to do it, but others said it was impossible.
One Weibo user 'ling dang guo zi', who failed the challenge, said her hands looked