The Songze Culture was a Neolithic culture that existed between 3800 and 3300 BCE in the Lake Tai area near Shanghai.

The Majiabang culture, formerly also written Ma-chia-pang, was a Chinese Neolithic culture that occupied the Yangtze River Delta, primarily around Lake Tai west of modern Shanghai and north of Hangzhou Bay. The culture spread throughout southern Jiangsu and Zhejiang north of Hangzhou Bay from around 5000 BC to 3300 BC, coexisting with the Hemudu culture in Zhejiang south of the bay. The later part of the period is now considered a separate cultural phase, referred to as the Songze culture. The Majiabang and Songze cultures were succeeded in their area by the Liangzhu culture.