According to the inquiry of China Travel Service. Com, the contractor refers to the project contractor. If you want to make money by controlling the project cost within the contract price of the project owner, you must sign a contract with the project owner. It is illegal for a contractor to sign a contract under a pseudonym, which belongs to the crime of contract fraud. According to Article 224 of the Criminal Law, the crime of contract fraud refers to the act of defrauding the other party of a large amount of property by fabricating facts or concealing the truth in the process of signing and performing a contract for the purpose of illegal possession.