So I've seen this time and time again people being seriously confused about Chinese scans and Japanese raws.
Sometimes I make fun of that or even of the people that get riled up about it, personally I've gotten so used to it that I automatically expect Chinese scans whenever people say raw to skip over that 1 second of "shitty misinformation, waste of time…" moment.
But maybe it's time to improve the situation and help people learn something new.
So I'm going to try teaching people the easy difference between the two and it doesn't even matter if you don't know a lick of Chinese/Japanese.
First of all there are 3 visual key difference between the two.
We'll be using these 2 pictures as examples:
! Chinese Scan
! 1. Chinese scans are generally cleaned while raws aren't:
Notice the difference in "cleanness", one has white dots all over it while the other doesn't.
2. Stroke count/complexity of characters:
Ok I may be biased as someone that studied a bit of Japanese but I feel like this is something that you can still estimate at a glance.
The Chinese text has a way more compact look to it than the raw, since Chinese doesn't use hiragana in between the kanji. While the Japanese looks a bit more cluttered(because of furigana) I still think the Chinese looks more visually complex.
3. And this is probably the most important for all the major series people tend to discuss here, "furigana":
You guys see the small additional characters beside the bigger ones in the first picture? Those are furigana(reading aid for younger people).
These are a Japanese thing so if you see those you can be fairly certain that it's a raw.
The reason I listed 3 things while the furigana point might be sufficient most of the time is because all those rules have exceptions.
Like there are Japanese online manga that are cleaned and qualify as raw(like Onepunchman). Or like the the speech bubble beside Leorio where there's no major difference in characters to the untrained eye. And there are many manga out there that don't use any furigana at all.
But you check all those 3 things and you should be pretty successful in determining what a raw and a Chinese scan is.
If I have time I'll try to search for links and add a quiz later so you guys can test yourself.