Legal analysis: not necessarily. Regular employees refer to workers with various employment forms and employment periods who sign labor contracts with employers, thus having labor relations with employers (including factual labor relations), including managers, technicians, workers and foreign employees of enterprises. Whether a worker is a regular employee after signing a labor contract with the subway company depends on the specific situation, because the subway company includes: China Metro Corporation, regional subway corporations, and regional subway subordinate units. According to your question, it is impossible to determine which company the contract was signed with, so it is impossible to determine whether it is a regular employee. You can contact your company personnel for detailed consultation.
Legal basis: Article 465 of the Civil Code of People's Republic of China (PRC). Contracts established according to law are protected by law.
A legally established contract is legally binding only on the parties, except as otherwise provided by law.