Douluo: Weird Opening Rules, Am I Tang San?

I'm not Tang San. When I opened my eyes and lay on the earthen kang in the dilapidated thatched hut in Holy Spirit Village with this face that was exactly the same as Tang San's, I realized that I had come to the world of Douluo Continent. Different from what was described in the novel, in addition to possessing martial spirits, the people here could also turn into monsters at night! Every day I feel like there are countless eyes staring at me. And if I want to survive, I must never let anyone find out that I am fake!