Heroes, which is better to write, the novel of fixing truth or the novel of martial arts?

Setting the truth requires relatively perfect achievement method setting and world setting, but after setting it, you can play it freely.

Martial arts are generally based on the real society (present or history), and there are restrictions on race and country (generally China), so it is generally required to have a close-up description of the moves, otherwise the sense of reality is not strong. In addition, modern martial arts is even more difficult to write (unless it is written in a fantasy style, who has seen really wonderful martial arts fighting now? )

Personally, I feel that martial arts will be a bit difficult to write.