Where should I go to Lhasa by train from Chengdu?

Chengdu once listed the direct train to Lhasa as T22/T23, which mainly passed through (stops): Chengdu-Guangyuan-Baoji-Lanzhou-Xining-Delingha-Golmud-Naqu-Lhasa. The details are as follows:

Note: Trains T22/T23 have been adjusted, starting from Chongqing North Station. There is no direct train from Chengdu to Lhasa, so you can transfer at Chongqing.

T222/T223 (Chongqing North-Lhasa)