What epidemic prevention procedures are needed for Huichangge Expressway exit in Zhengzhou, Tomb-Sweeping Day on April 5, 2022?

According to relevant data, it is proved that the nucleic acid detection is completed within 48 hours. As of April 5, 2022, Tomb-Sweeping Day returned to Changge from Zhengzhou, belonging to a foreigner. He must show his nucleic acid certificate within 48 hours before he can get off the high-speed station, which is also a requirement during the epidemic prevention and control period.