Very sad.
The sad part that is in China, they think that is normal, and don’t notice for months if someone is missing. In western China it is considered normal to lose friends. My friends in Guangxi are different from the ones in Guangzhou in this regard.
Also, unlike the US, in China most people stay in close contact with their classmates all of their lives (for the most part).
I moved away from my hometown 40 years ago - in China your hometown is your identity.