@kiraomgsmut as should be blatantly obvious if you've ever actually read any of these shitty manwhuas and general chinese anything, cultivating is part meditation and part training to increase one's ki and spiritual power. Any supernatural powers related to martial arts, ki, qi, chi, souls, spirits, whatever, you level up through cultivation. Because you're "cultivating" your spirit.
Nobody should have to explain this to you though. It's painfully obvious in 99% of chinese media, you could have googled it or looked it up on wikipedia or just, you know.... read the fucking webcomic and put the words together with the pictures to comprehend what was happening in the story.