Cannons of Vietnam in the Afterwards Lê dynasty In 1418, Lê L?I used to be the son of a rich aristocrat in Thanh Hóa, led the Lam S?n rebellion in opposition to the Ming from his base of Lam S?n (Thanh Hóa province). Overcoming many early setbacks and with strategic advice from Nguy?n Trãi, Lê L?i's motion last but not least gathered momentum