Chengdu Metro Line 27 opened and Line 8 was extended on December 19, 2024
https://www.urbanrail.net/as/cn/chdu/chengdu.htm
Chengdu Metro has Line 1 to 10, 17 to 19, and 27.
I wonder why such a large number "27" was named to the line opening at this moment.
I guess it's the largest metro line number in China.