Why did the mountains and rivers make Gu Xiang call it unintentional purple evil spirit?

The innocence of ancient incense is intolerable in Ghost Valley. Only with ShaQi can we find a way out in Ghost Valley.

According to the query of douban film, in the TV series "Order of Mountains and Rivers", Gu Xiang was called unintentional purple evil spirit because Guigu could not tolerate Gu Xiang's innocence. Ghost Valley is a place full of intrigue, and it is difficult for a simple and kind person like Gu Xiang to survive. In order to find a way out in Guigu, Gu Xiang can only wear a purple mask and Sha Qi as an unintentional purple evil spirit. This name has also become the code name of Gu Xiang in the rivers and lakes, which can better protect himself and pursue his goals. This name also symbolizes the transformation and growth of Gu Xiang in the Jianghu.