This is a bean weevil, which harms mung beans, soybeans and other beans, and does not bite. It should be the beans at home growing bugs.

China has more than 40 species. Body ovoid, small and medium-sized, a few species larger. Compound eyes large, anterior margin strongly concave. Antennae 11-segmented, serrated, pectinate. Sheath wing hairs are white, brown, often forming a mottled pattern , the end truncate .