Trending footage has emerged of a five-year-old boy in China struggling to get into his school uniform after he put on weight while spending over four months at home due to the coronavirus lockdown.

The pre-schooler can be seen in the viral video sucking in his belly as his grandmother tried to button up the child's shirt. The boy then smiled in relief after he finally put on the school outfit.

Tens of millions of social media users have been amused by the boy's adorable expression after the clip was uploaded yesterday on Chinese Twitter-like Weibo.