"How can we expect the enemy to give us freedom. Freedom must be won with our own hands." In the fall of 1426, during the great Northern advance of Lam Son insurgent army, the trio Dinh Le - Nguyen Xi - Ly Trien together created an unprecedented victory, the victory of Tot Dong - Chuc Dong. Take the meager 6,000 troops to confront with 100,000 elite soldiers of the Ming army. A battle that shook heaven and earth, opened up an opportunity for a people to rise up for 20 years that were trampled by slaves and trampled.