Don't. Yan'an, located in the north of Shaanxi Province, is located in the middle reaches of the Yellow River, the Loess Plateau in the south-central region, known as the "three Qin lock and key, the five-way lapel throat". According to the announcement issued by the two epidemic prevention and control headquarters, as of September 26, the two places are no epidemic, no need to isolate. After arriving in Yan'an, take the initiative to cooperate with the landing check (48-hour nucleic acid test certificate, Shaanxi one-code pass, big data trip card), the landing inspection (that is, the test is ready to go, no need to wait for the test results), the landing management (according to the trip classification management) and "three days, two inspections" and other measures.