As far as I know, it was because Lensang sang a song accompanied by Sladen before Sladen, and then Xianer jumped out to help DuDu the next day. Although there was no confrontation between the two, the relationship was awkward because of that incident. Since then, the two have never cooperated, or even communicated online.
Then, as a fan of Xianer, I certainly want to be quite Xianer, although I don't understand why Xianer jumped out to express his views in the first place. Maybe I just want to speak for my teammates. I don't understand those people who say that Xianer will help his relatives or hack him.
However, I think even with this incident, Rensang really didn't do anything wrong to Xianer. Many stories about the relationship between Rensang and Xiao Yiqing on the Internet are poisonous.
I don't want to see any dispute between two fans, but I still care about some things that fans do. Since that incident, I still often see people brushing Lensang in Xianer's videos, which I strongly disagree with. This phenomenon of scribbling in other people's videos makes people feel as if even Sang and Xiao Yiqing have to be tied together, which is very bad.
But in the end, they are all excellent singers. Although I am a fan, I can't go to Helen III because of this. Anyway, I wish them well.