This is a really big deal. It's filling one of the last major links in China's HSR corridor, connecting the megacities of Chongqing and Chengdu to the rest of the network.

Edit: I thought this was the main line between Wuhan and Chongqing, turns out it's actually a horizontal between Zhengzhou and Chongqing!

One more edit: turns out it serves both! https://source.ichongqing.info/2022/05/Reduction-in-Train-Time-from-Chongqing-to-Other-Cities.-2.png?x-oss-process=image/resize,m_lfit,w_1200,image/format,webp