A young couple from China’s Guangdong province has become famous for their uncanny resemblance, leading many people to speculate that they might be long-lost siblings.

Liang Caiyu and He Xiansheng, both in their twenties, run a herbal medicine shop in Dongguan, Guangdong province. Although they both come from families with decades of experience in traditional herbal medicine, the two struggled to get their business off the ground until they started doing promotional clips on Douyin, China’s version of TikTok. After noticing how similar they looked, Liang convinced her husband to take part in funny clips where they dressed alike to emphasize their likeness even more. Today, these clips are the couple’s main promotional material for the shop.