What Should I Do If My Apprentice Is Too Capable of Causing Trouble?

Four hundred years ago, he was called the Sword Demon, and he ruled the world with one man and one sword. Four hundred years later, he has retired to the mountains and is now the master of four disciples. However, his disciples are too capable of causing trouble, making it difficult for him to sleep peacefully. He can't bear to be beaten, and he can't bear to be scolded. He often wondered how he could become an apprentice to such a group of cheaters. Especially the second child, the Chosen Son, the most hunted person in China. The cub that the northern monks most want to kill. "Master, it's not good! Second Senior Sister is being hunted down again!" Alas, I can't sleep again today... I'm being chased! "