In 1619, in the Battle of Salhu, after the defeat of Juniper's army, a group of defeated deserters fled from Liaodong, fled into Guannei, and went all the way to the west...... Liu Heng, who crossed over, became a rogue with an uncertain future, accidentally overturned the opponent, became the leader of a battalion, trained recruits, became the king of the mountain, set up checkpoints, and robbed the gentry...... accidentally had the capital to compete for the world and became the most feared opponent of the Jurchens......