Bian Yu and Bai Qi eventually didn't make a move.
They were certainly unwilling, but what use was it if they did? If the two of them didn't use self-destructive secret techniques, they wouldn't be a match for Chu Hao even if they teamed up. The problem was, even if they used secret techniques, they might not be able to kill Chu Hao.
The best plan was for one of them to use a secret technique to hold Chu Hao back while the other went back to their sect to bring a senior to deal with Chu Hao.
But who would go?
The one staying behind would not only have to self-destruct with the secret technique, but more critically, what if the other only brought back their sect's elder and killed Chu Hao, then killed him as well? Who would he cry to for injustice?
They belonged to different counties and were competitors. Who would dare place their life in the hands of the other?
Thus, they could only watch as Chu Hao went farther and farther away.