I just love the line, "grandpa zhang, who collects military and historical newspapers as a hobby spotted the documents at a stall"

Such a grandpa thing to do

they probably just felt it was a waste to destroy the paper lol

If it's anything like Egypt, old papers and books can usually be sold to scrap sellers for pocket change and they're sometimes resold to falafel restaurants to wrap the falafels in.

I assume this is a similar thing in China but replace falafel with the Chinese street food equivalent.

I guess China's civil servants are all big Warthunder players