Double Shadow Twin

Ding You is a contracted writer for a publishing house. One day he received a letter from someone who claimed to be his twin sister. After meeting him, he found a woman who looked exactly like him lying in a pool of blood. Is this really his sister? Why did she die? Killed by whom? Ding You decided to find out the truth, but found that bigger mysteries emerged... The truth behind it makes people shudder, and the distortion of human nature brings tragedies one after another...