I love the choice of my family. Do I have to sign a contract?

I love my family's selection contract. According to relevant public information, I love my real estate brokerage company, which is a large enterprise engaged in real estate brokerage and related industry services earlier in China. Its professional level and service concept have always been in the forefront of the same industry, not only respected by peers, but also gradually become a real estate service expert deeply loved by consumers.