Will the health code of z 162 change?

Z 162 refers to the new air-conditioned express train from Kunming to Beijing West. The train will not stay in the same area for more than 4 hours during driving, so according to the information released by the National Bureau of Epidemic Prevention and Control, the health code will not change color. Train z 162, formerly known as T62, was carried by Kunming Bureau Group Co., Ltd..