Its a really big painting (5.25 meters long) from ancient China. However, it doesn’t look like it has the amount of color and technique needed in some Western Renaissance pieces. The wiki doesn’t say, and probably doesn’t know, how long it took the guy to paint it. Nor did it have any info on how long the 6.7 meter remake in the 18th century took to paint, but that was by multiple people. Anyone hazard a guess?