In China, 'pet yeast'—dubbed 'face worm'—has become a popular low-maintenance companion among youth. By feeding dry yeast with flour, water, and sugar, it grows into a bubbling mass emitting a wine-like aroma, offering a unique alternative to traditional pets.

This trend reflects a shift towards 'static pets' like stones and paper boxes, appealing to those seeking companionship without the responsibilities of traditional pet care. As one enthusiast noted, 'No need to walk it, no mess, it's worry-free and easy to look after!'

If you don't want to keep it anymore, just add more flour and turn it into steamed buns to eat; there is no psychological burden.