China Railway Tunnel signed Zhengzhou Zhongsheng to better respond to the call of the local government, improve the safety and efficiency of local projects and better meet the needs of local residents. China Railway Tunnel Engineering Group Co., Ltd. is a wholly-owned subsidiary of China Railway Engineering Group Co., Ltd. (hereinafter referred to as China Railway Construction), mainly engaged in the design, construction and operation of transportation infrastructure projects such as tunnels and subways. Zhengzhou Zhongsheng Construction Engineering Co., Ltd. is a holding subsidiary of China Railway Tunnel Engineering Group and its local branch in Henan Province. In the field of construction engineering in China, large construction companies or groups often set up branches in various places to undertake local construction projects. In this process, the bidding and signing of many projects are completed by local branches, not directly operated by the head office. Therefore, in the Zhengzhou subway project contract signed by China Railway Tunnel Engineering Group, the signing unit is Zhengzhou Zhongsheng Construction Engineering Co., Ltd., which is actually Henan Branch of China Railway Tunnel Engineering Group. This practice is very common in the construction industry, aiming to better respond to the call of the local government, improve the safety and efficiency of local projects and better meet the needs of local residents.