Miler, who has a system for giving up

Just as I was in seclusion cultivating, I suddenly felt a pang of heart palpitation. Immediately afterward, my soul inexplicably entered this girl's body. I tried moving around and found that this body was perfectly normal, as if it were my original body, even the meridians were identical. What surprised me even more was that I could actually circulate my own cultivation technique. Although my cultivation level had dropped from the Golden Core stage to the mid-Qi Refining stage, the familiar flow of spiritual energy still thrilled me. After transmigrating, I suddenly possessed a cheat system, and even encountered a group of men in black trying to assassinate me. Only then did I realize it was related to the old man who taught me cultivation techniques in my original world...