Some people used the failed experimental plan to create and break out a plague
The world fell and was divided into four parts: Gui Yuan, Shen Sheng, Wu Chang, and Rong Pang Guan. They received 3 letters respectively, which were distributed by a mysterious person. The leaders of the four parts seemed to be afraid that she (he) had sent their three most trusted young people there.
These people became an organization. They knew each other, helped each other, tolerated each other, and they finally discovered one thing. Everything we do is controlled by someone.
Who is that person? Right beside you
Purpose: unity