In the task of the game, you can see Xiao Jiang's father's notes. In his notes, he wrote that Xiao Jiang had mental problems. He has gone to Bubulu to ask for medicine, and the result will come out soon. As a result, Xiao Jiang suffered from mental retardation. Although he is an adult, his mind is still like a 7-8-year-old child.
There is another detail here, that is, Xiaojiang's family lives alone on the mountain near Li Yuegang, away from the crowd, probably because Xiaojiang's mental problems have been criticized, and his parents want to keep him away from public opinion in this way.
Xiao Jiang's parents may be gone.
Although Xiao Jiang is mentally incomplete, his parents love him very much, and the whole family often plays hide-and-seek together, which has become the key factor for Xiao Jiang to survive in the end. Xiao Jiang mentioned in the second hide-and-seek that his father said he was very young, which showed that Xiao Jiang was not so tall or so fat before his parents left, so when the player met Xiao Jiang, his parents had left for many years. His father's comrades-in-arms have been taking care of him all these years, but Xiao Jiang still kept his innocence and waited for his parents to come back.
There are two fairies near Xiaojiang's house. One is near the cemetery, and the other is on the opposite mountain. After the player touches them, they will all come to Xiao Jiang's door. These two fairies may be Xiao Jiang's parents. They have been with Xiao Jiang in another way.