Ruan Baijie explained to Ling Jiushi that Obsidian was an organization that took players through the door, and Ling Jiushi was not interested.At night, everyone reasoned and verified, and learned that the landlady and the village chief had a daughter, Xiaojiu. During a certain wolf disaster, the village chief chose to give up his daughter to save the villagers. Xiaojiu died and became a monster hiding in the tunnel.
Ling Jiushi remembered that many years ago, his best friend had given up on himself in order to save more people, and he empathized with Xiao Jiu.The key appeared after Xiaojiu disappeared.