BL novels I know that have cultivation in it. 

Meaning of cultivation from Dr Google: A Taoist concept by which humans can extend their lifespan and gain supernatural powers through practicing a set of material and mystical arts involving meditation and the cultivation of Qi.

Take note for all the people who don't know what cultivation is, cultivation varies in many different ways throughout books. One can have sword cultivation, another can have immortals, and so many others. The basic concept that a person is trying to achieve immortality and/or power through practicing and cultivating.

Please comment and give me recommendations! :D