How many days does it take to punch in Chengdu?

Not less than 15 days. According to official website's inquiry, squad leader Lu, Chengdu Housing and Urban-Rural Development Bureau's Notice on Further Implementing the Real-name System Management of Construction Site Personnel and Strengthening Their On-the-job Performance, the project manager, technical director, safety engineer (safety director), safety officer, project director and other project quality and safety filing personnel of the supervision unit. The on-the-job performance time of the registered project manager of the construction unit shall not be less than 80% (24 days) of the construction time of this month. The on-the-job performance time of the project leader of the supervision unit for the record is not less than 15 days. All personnel in filing positions shall not be absent from work or ask for leave for five consecutive days.