Tong Meng was the younger brother of Tong Wei. The Tong brothers made their living by selling salt and both of them were powerful swimmers and boatmen. Tong Meng was thus nicknamed 'River-churning clam' (翻江蜃).
The Tong brothers lived together with Li Jun at Jieyang Mountain. Once, Song Jiang was exiled to Jiangzhou and passed by Jieyang Mountain along the way. He was knocked out by drugs in Li Li's inn, but was saved by Li Jun and the Tong brothers in the end.
