沈阳地铁4号线下月开通运营
(Shenyang Metro Line 4 will begin operation in the 2nd half of the next month)
http://www.ln.news.cn/20230813/748941bc43f846029c4afe49c911ce33/c.html
Since the article is old, the article says "will begin operation". But, it has already opened.
The line connects Shenyang North Railway Station and Shenyang South Railway Station, and passes through Taiyuanjie Station(The station next to Shenyang Railway Station).
It's rare to see single metro line connects North, South, and main railway stations in China.