Because of the epidemic. According to the State Council's notice of inquiring about the epidemic situation, there is an epidemic situation in Lanzhou now, because there are fewer takeout staff in the policy due to the epidemic situation. Lanzhou, referred to as "Lan" or "Gao", was called Jincheng in ancient times. It is the capital of Gansu Province, the center of politics, culture, economy, science and education, and an important central city in the western region. It is the capital of Gansu Province, an important industrial base and comprehensive transportation hub in northwest China, one of the important central cities in western China, and an important node city of the Silk Road Economic Belt approved by the State Council.