Xu Fengnian didn't directly witness the scene of his sister's death in the Savage Blade in the Snow. He learned about it indirectly through the descriptions of other characters. According to the plot of the novel, Xu Fengnian didn't know her name until he heard her background story and tragic fate. Later on, in the scene of his sister's death, Xu Fengnian inferred the cause of her death through some clues and details, and thus produced deep sadness and emotion.
Xu Fengnian only had one child in the novel, Sword Snow Stride." His name was Xu Nianliang, and his nickname was Little Sweet Potato. This child was Xu Fengnian and Sweet Potato's child. He was his only child in the novel. As for Xu Fengnian's ending, according to the information in the search results, he finally chose to retire and no longer pursue power and status. The details of the ending were not mentioned.
Xu Fengnian had married six wives in Sword Snow Stride ". His six wives were Jiang Ni, Nangong Pushe, Lu Chengyan, Wang Chudong, Sweet Potato, and Pei Nanwei.
The process of Xu Fengnian recovering his cultivation was not clearly described. The search results mentioned Xu Fengnian's experience of falling and rising in different plots, but there was no mention of how he recovered his cultivation. Therefore, based on the information provided, I can't answer the question of how Xu Fengnian recovered his cultivation.
In the end, Xu Fengnian married six wives.
In the end, Xu Fengnian married four wives. They were Jiang Ni, Wang Chudong, Hong Tu, and Pei Nanwei.
In the end, Xu Fengnian married six wives. They were Jiang Ni, Nangong Pushe, Lu Chengyan, Wang Chudong, Sweet Potato, and Pei Nanwei.
In the end, Xu Fengnian married six wives.
In the end, Xu Fengnian married six wives.
In the end, Xu Fengnian married six wives.
In the end, Xu Fengnian married four wives.