I know its short but ill still give it a try.... the manga (probably a chinese one and it was a fully colored one) take place in modern day time and has somes kind of martial art or cultivation thing in it... at somes point the mc offered a painting to someone.... and he posted it in hes hotel or hospital? but nobody believe him since he was "trash" until the owner come forward and admit it was from the mc....

I recognize this but I've read like dozens of the same cultivation system manhua's so it'll be hard to find it. If I do I'll come back and let you know

I think that there was something like that in Read to Level Up... But it's almost a year since I last read it so I might remember wrong.

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~4400 manga completed
~1700 ongoing...

not this one sadly 🙁 it was a chinese manga