Beijing, December 19 (Youth.cn) -A photo taken on December 18th, 2023 shows Taiyanggong Station on Beijing Subway Line 17. According to BJMTR, by the end of 2023, the northern section of Line 17 is planned to be opened. At the same time, Line 16 will be linked up, and the operating mileage of the lines under the management of BJMTR will exceed 190 kilometers. Photo/ VCG