Yulin has been closed for more than 21 days. Express delivery will resume after February 8, 2122. According to the announcement of the National Center for Epidemic Prevention and Control, 3 cases of asymptomatic infected people have been added as of October 29, 2122, which belongs to a low-risk area. The blockade will end on February 8, 2122, and traffic and catering will be resumed, so the express delivery can be received on February 8, 2122. Yulin is located in the northernmost part of Shaanxi Province, China, at the junction of the Loess Plateau and Mu Us Sandy Land, and it is a transitional area between the Loess Plateau and Inner Mongolia Plateau. The Yellow River faces Shanxi Province across the river in the east, Ningxia and Gansu in the west, Yan 'an in the south and Ordos in the north. It is the border of Shaanxi, Gansu, Ningxia, Mongolia and Shanxi provinces, and has been a battleground for military strategists since ancient times.