I'm relatively new to this wuxia/xianxia WN thing but in most stories I've come across, the MC are almost always ruthless or jerkass. While I don't really like goody-two-shoes MC, I'm also tired of those jerk MC. So is there any stories where the MC is chaotic neutral (read: troll) but ultimately on the good side?
i know i sound really repetitive by now but these stories are thaaaaaaaaat gooooooooooooooood! ISSTH World of Cultivation
The main characters for the martial world duology for the most part just do their own thing and only concern themselves with things that directly involve them or their family. Re:Monster might match what you are looking for. A true chaotic neutral mc is in Kumo Desu ga, Nani ka?
Upgrade Specialist in Another World, The King's Avatar (not martial art tho), Gate of Revelation, Absolute Choice, A Will Eternal
Experimental Log of the Crazy Lich - this is more of a chaotic good because he wants to save the world but his methods are often pretty evil.
Running Away From The Hero! -- Probably counts. He's trained both heroes and villains, but before all, he messed so much with them that they became heroes / villains. He doesn't care about anything but his safety, and yet I don't know why he keeps throwing rocks at bee nests : )