Hilariously, Dragonball is a rehashing of a far older folktale.

The very beginning was. Most japanese comics are designed to be serialized for a long time, and are built to change direction if needed: Getting serialized is difficult, and low enough reader scores get you kicked out of the magazines, so it's common for a story to be built to swerve. Early Dragon Ball is a light thing like Dr Slump but a little more some fighting, but anything related to the old folk tale was dead and gone by, say, the second time there's a martial arts tournament. Most of what most people think about regarding dragon ball is past the moment where we randomly learn, through the power of retconning, that our main character was an alien all along, and people of his race are invading earth. Not quite the kind of thing from Journey to the West

Some viewers will remember growing up with the TV series Monkey, whose bizarre images and stories of Pigsy and the titular flying Monkey I shall never forget.

Monkey Magic theme song anyone? https://youtu.be/wddJnq-D3XM?si=J2xAgXoygreTD73w

https://en.wikipedia.org/wiki/Monkey_(TV_series)

Rehashing and inspired by are different things.

There are certain elements of Journey to the West found in DB but not even Goku is similar to Wukong. Yes, monkey-like features, extending stick, perhaps a couple of early characters but everything else is not even close. So I don't think it's fair to say that is a rehash.

Judging from the initial portion of the anime Dragonball pivoted gradually from a loose adaptation of Journey to the West (with Goku as the protagonist among funny versions of traditional characters) to a more original and specific setting and plot (with Goku as the most important of many Saiyan and martial artists).

Which one?

‘journey to the west’ [https://collider.com/dragon-ball-journey-to-the-west/], about 400 years old.

Another Chinese classic is The Romance of the Three Kingdoms and I think that might be one of the oldest character-rich media franchises of all times. Drawings of Cao Cao and other characters have been identifiable for hundreds of years. They are still making video games (Dynasty Warriors) and TV shows based on it.