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Beijing lodges strong protest against approval of SAR-related bill by Senate
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 and Zhangjiakou will co-host the 2022 Winter Olympics.
Beijing, Washington underscore cooperation, constructive ties
Bei Bei munches on bamboo at the zoo on Wednesday. YUAN YUAN / FOR CHINA DAILY
来源：资阳报