Cage of Shadows Episode 18

Nan Yan Zhi, the daughter of a craftsman, lost her family to a massacre. She becomes Zhuang Wu Jiu's apprentice, who helps her transform from a naive girl to a ruthless woman, struggling in the mire of life. Using only a few clues, she infiltrates the Lingya Tower alone to seek revenge. Rumor has it that those who enter the place become beasts in the arena, with no one surviving. Just when Nan Yan Zhi thinks she is alone and helpless, she witnesses Zhuang Wu Jiu reappearing as the no other, than ruler of the Lingya Tower…(Source: Chinese = iQiyi || Translation = MyDramaList)