Gleditsia sinensis, known as zào jiá (皂荚) or Chinese honey locust and black locust in English, is a species of flowering plant native to Asia.

Spines are often branching and are robust, terete, conical and up to 16 cm in length.

The English equivalents include Chinese honey locust (or Chinese honeylocust),[3] soap bean[4] and soap pod.

[5] Zao jia is one of 14 species in the Gleditsia genus in the Caesalpinioideae subfamily of the legume family.

[8] The thorns of Gleditsia sinensis are used as a medicinal herb in China and Korea and may have antitumor properties.