Cannons of Vietnam in the course of the Later Lê dynasty In 1418, Lê L?I had been the son of a rich aristocrat in Thanh Hóa, led the Lam S?n uprising versus the Ming from his foundation of Lam S?n (Thanh Hóa province). Conquering many early setbacks and with strategic assistance from Nguy?n Trãi, Lê L?i's movement lastly gathered momentum. In