Pan Feng, deputy director of Beijing Economic Information Bureau, said that Beijing will strengthen the linkage with Tianjin and Hebei, actively promote the sharing of data related to epidemic prevention and control, ensure the mutual understanding of Beijing Health Treasure and related services between Beijing, Tianjin and Hebei, and provide technical support for joint prevention and control of the three places. At the same time, Beijing will actively promote the data integration of the three places, and the health codes of the three places will realize mutual recognition in the future.