They were the Demons of 28 Star Mansions!
They were here to welcome Su Qianqian.
Next, the Demons of 28 Star Mansions introduced themselves to Su Qianqian.
"I am the Horn Wood Flood Dragon!"
"I'm Kui Mulang!"
"I'm Niu Jinniu!"
"…"
"I'm Chariot Golden Dog!"
"I'm Girl Earth Bat!"
After the Demons of 28 Star Mansions introduced themselves to Su Qianqian, they said, "We're willing to be Big Sister's followers!"
Before this, Lei Gong and Dianmu had already gone to the guard post to talk about Su Qianqian and the demon she had subdued.
Therefore, the 28 Star Mansions knew about her very well.