Being Looked Down Upon by My Fiancée, I Turned Around and Chose the Beauty CEO

Black sun discharges pollutants around the world, causing human genetic mutations and putting them at risk. Zhang Zian was sent to Baihua Valley to be a killer when he was young, but he never imagined that he would become a master of gynecology, taking care of the happiness of dozens of seniors and sisters, and finally embarked on the path of healing the world. Fighting against Noah, when will he be destroyed and sweep across the world? [The protagonist of this book is very pure and does not have any harem. If there is one, it is forced. After all, a good man cannot disappoint people]