What is the procedure for taking the high-speed train from Chengdu to Tongren?

According to relevant data, as of September 17, 2022, Chengdu needs to take the high-speed train: 48-hour nucleic acid certificate and health code travel code double code green code, because Tongren is currently a normalized prevention and control area, and there are a few low-and medium-risk areas in Chengdu. Tongren epidemic prevention and control headquarters checks 48-hour nucleic acid certificate and health code travel code double code green code for people coming and going to Chengdu.