a major subsidence—sinking the entirety of Dongsha and most of Xisha—provoked a mass emigration back to the mainland. Around the same time, however, Sansha expanded towards the north while Yaoliusha simultaneously eroded in the south while building up in the north, "migrating" it towards Sansha.

Chongming County was later placed in Suzhou and then Taicang Prefectures. Over the course of the Ming, numerous shoals arose in succession: Ma'ansha,