With the vote of the four dummies, Zan Zichen was pardoned his crimes, but he was no longer a disciple of Shi Fang sect. To play it safe, Yao Si made him wait at the service person's room until his wounds got better before leaving.
As for Sect Leader Yu, she couldn't be sure whether he would cause trouble in the future as it was limited what she could do.
After the matter was settled, the service crew member ensured that there wasn't anyone else before starting on his duty. He was called Qiao Bu, similar to a certain someone that sold fruits.
After hearing Mr. Qiao's explanation, Yao Si understood that she had been sent to the wrong destination because of the booth she registered at, that booth was meant for the training of celestials themselves.
If the third district was considered beginner level, then the ninth district was hell, even celestials themselves rarely went there.