After leaving the Yang family household, Shi Yu first returned to the Shi household before going straight to Xiao Chen, one of the top ten medicine masters in the Chu royal city.
Xiao Chen was an intermediate-level medicine master who had not joined any family, and he had opened his own pharmacy in the city. As the poison expert among the top ten medicine masters in the Chu royal city, Xiao Chen had a monopoly over the whole market for poison detoxification in the city.
Xiao Chen hadn't joined a family not because none of them wanted him, but because he wanted the freedom of not being tied down by a family. If he wanted to, he could even join the household of the Chu king and become a royal physician there.