Hou Dao Xiao Sheng, Red Dust White Hair, and a few others had the deepest grievances and the most intense enmity with One Sword Withering and Prosperity. However, when the wind changed, they were the first ones to soften their attitude and show signs of approaching him.
This change started after they failed to jointly fight Chief Master and Jiang Gong Wang Yue for the Bi Chen Boat. They no longer acted competitively on ordinary tasks and even expressed their desire to reach a reconciliation and, potentially, integrate into the Qing Emperor alliance.
Of course, these notions were only hinted at and not further explored.
However, the leaked information was already enough to prove that these former enemies, feeling that it was increasingly impossible to shake the position of the Chief Master in Qingcheng, had instead thought of taking the initiative to approach him for greater development opportunities. It's not surprising that they took this approach.