Mr Brown added: 'If people who don't have joint hypermobility try to do a finger knot, they are not likely to break their fingers, but it could cause them to stretch their ligaments and tendons, which could cause potential physical pain and may lead to instability of their joints and arthritis later in life.'

布朗还说：“如果未患有关节过度活动综合症的人做这种‘打结手’，虽然骨头不会断，但是会拉伤韧带和肌腱，可能导致手指疼痛，关节不稳定，日后还可能引发关节炎。”

Mr Brown also said only 'a small number of people with unusual anatomy' could do the finger trick Chinese actor Zhang Yishan has performed.

布兰认为，“只有一小部分生理构造特殊的人”能够做出和张一山一样的手势。

Bizarre challenges involving different parts of body have always been popular among Chinese social media users.

中国社交媒体使用者常热衷于一些不同身体部位的奇葩挑战。

In 2017, 130 million people joined in the so-called 'belly button challenge' as they tried to touch their navels by reaching around their backs. According to the organizer, the challenge was to test if the participants needed to lose weight.

2017年，1.3亿人加入了“反手摸肚脐”挑战。挑战者需要用手绕腰一圈再摸到肚挤眼。据组织者称，这个挑战是为了测试参与者是否需要减肥。

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