Zhou's senior. He not only pointed out Zhou's martial arts foundation, but also gave a book to Monday, summarizing the secrets of martial arts to the highest level, Jiuyin. Although Zhou was asked to find a place to hide, Zhou was trapped in Peach Blossom Island and had no place to hide, so he read by himself and backwards. Although he didn't practice the martial arts recorded in Jiuyin Zhenjing all his life, his martial arts mentality was inadvertently absorbed by Zhou, which is also a reason for Zhou's strong internal strength.
Another person Zhou should thank is. I lied to the second half of Zhou's "Nine Yin Zhen Jing". In order to get the first half, he trapped Zhou in Taohua Island, saying that if Zhou couldn't get out by himself, he would give the first half of Jiuyin Zhenjing.
Zhou Wei kept nine shades and was trapped in Peach Blossom Island for fifteen years. In these fifteen years, he spent all day in the cave wondering how to improve his martial arts in order to rush out of the Peach Blossom Island. It was also in that year 15 that he was trapped in a cave and he was very lonely. Besides memorizing the first half of Jiuyin, he also created his own boxing, which greatly improved Zhou's martial arts. And escaped from Peach Blossom Island.