According to webpages of Wikipedia(Mandarin version), the following lines will begin passenger service.
・On December 28
MTR Hong Kong South Island Line: South Horizons〜Admiralty
Nanning Metro Line 1: Nanhu〜Shipu
Beijing Metro Line 16: Beianhe〜Wanpingcheng
Guangzhou Metro Line 6: Changban〜Xiangxue
Guangzhou Metro Line 7: Guangzhou South〜Higher Education Mega Center S. (Daxue chengnan)
Foshan Metro Line 1: Xincheng Dong〜Kuiqi Lu
Wuhan Metro Line 6: Dongfeng Motor Corp.〜Dazhi Road
・Today
Qingdao Metro Line 3: Qingdao〜Dunhua Road
Why many metro lines in China have opened in December 28 each year?
