Perspective: China is suffering terribly from the out of control debt used to build their high speed rail system and incidents are being systematically covered up rather than used to improve reliability of service. It's a trillion dollar blow out, not the great success that so many claim it to be.
There are some lines that were built for ideological/vanity project reasons, I dunno who tf thought it would be a good idea to build HSR to xinjiang, but the coastal lines are actually profitable [1] (take the government numbers with a huge grain of salt though)