Cannons of Vietnam in the Later Lê dynasty In 1418, Lê L?i was the son of a rich aristocrat in Thanh Hóa, led the Lam S?n rebellion towards the Ming from his base of Lam S?n (Thanh Hóa province). Conquering many early setbacks and with strategic suggestions from Nguy?n Trãi, Lê L?i's movement ultimately gathered momentum. In September 1426, t