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Because of the coronavirus epidemic, the reserve has limited the flow of visitors to 50 percent of its maximum daily average capacity. Visitors are required to scan the Guizhou health code they hold, have their body temperature measured and undergo disinfection with alcohol before entering.

Beijing now has 22 metro lines. In 2017, the city's metro system measured 608 kilometers. Shanghai has the country's longest metro systems with a total length of 705 km in operation as of Sunday.

Beijing's GDP in 2019 saw a 6.1-percent growth from a year earlier under comparable price, standing at 3.54 trillion yuan.

Before the expansion, he ran the snack bar from the front half of his house, which was unsanitary as his family were living in the back. The problem no longer exists as the family now lives on the second floor.

Beijing is home to 520 kilometers of the Great Wall, which traverses 15 provinces and cities.