When it comes to solidarity and sincerity, then china and it's people are decades behind Japan.
Srsl it's not a coincidence nor a conspiracy that you can find a lot of videos/video compilations/stories on web where chinese people just walk past when there are other chinese people in need and suffering on the street, whether it being someone beaten, kidnapped or robbed. It's like a promised land of NPC's.
Also I think it's plain disgusting trying to make yourself look better, by making others look bad.
(especially when it's "our nation is better than theirs" kind of shit.)
It's also very self-ironic since I think this webtoon portraits truthfully how chinese people are very selfish and are not solidary people when it's about people who are not family to them. You really can't bash japanese, and sing China's praises, while in that same webtoon every people who our protagonist has helped, have eventually turned their backs to their saviours.. Very ironic indeed..
Ofc things aren't so black & white, and I'm sure not all chinese are bad people who won't help other countrymen in need.
I recommend watching vid from youtube,
"China lacks good samaritans and it's terrible" by serpenza. It's very related to this topic.
Also let it be mentioned that I'm not of japanese or of chinese origin. I don't hate either, but I'm more fond of japanese people (& their culture), and would move to Japan if I had to choose between them two..