Weinan to Xi 'an, transfer to the high-speed train to Tianshui, and the mobile phone code remains unchanged.

Transfer in the station: With the improvement of the epidemic situation, transfer passages in most stations have been opened, and you can transfer by checking the double-code joint ticket. If the location is not in the middle and high risk area, the health code will not change color. If the location is in a medium-high risk area and the stay time is usually more than 4 hours, then the health code will change color. Therefore, as long as the stay does not exceed 4 hours, the transfer of health code in Weinan will not turn yellow. I hope my answer can help you, and I wish you a happy life!