Who was released by Xiao Xu?

In the fierce knife in the snow, Li Chungang, the sword god of Li Lao, walked out of the secret room of Xiao Xu, the king of Beiliang who listened to the tide in Beiliang Palace. Li Chungang is a romantic figure in the Jianghu of the older generation. He traveled all over the world with a sword in his hand, because Wang Xianzhi, the duke of Wudi, claimed to be the second best in the world seven times. Later, he stopped thinking and was trapped in the secret room.