What are the procedures for Lintao to Lanzhou?

According to relevant information, Lintao needs to provide 48-hour negative nucleic acid test certificate, health code and travel code when going to Lanzhou, because the Lanzhou epidemic prevention department informed that all people from other provinces who came to Lanzhou and returned to Lanzhou should provide 48-hour negative nucleic acid test certificate, health code and travel code from June 9, 2022.