How to apply for Beijing site code?

According to Beijing's new epidemic prevention and control policy, people who have lived in Tianjin and Hebei continuously for 14 days and those who travel from Beijing to Tianjin and Hebei will no longer be observed at home. Combined with the policy of "mutual recognition of Beijing-Tianjin-Hebei health status" two days ago, this means that the "green code" of Beijing Health Bao will become a general health certificate in Beijing-Tianjin-Hebei region: the holders of the "green code" can not only go in and out of various public places and take public transportation in this city, but also commute, travel and visit relatives in Beijing-Tianjin-Hebei region.