Episode 9: On the way back to the mountain road, a series of strange things happened. 1 1 Two brothers were crazy, and eight were killed by lightning.

Episode 13: That night, Laowu found Xiao Jiannan and told the scene of Laoba's death. Lao Ba's death may actually be suicide.

Episode 19: According to the records in the archives, the spy who infiltrated the cottage was Feng 'er. The wind admitted to everyone the reason for going up the mountain. It turns out that Fenger went up the mountain because of Lao Ba. Lao Ba is the descendant of Tan Zhongbei, the wife of Nan Zhangbei, and Xiao Jiannan's eldest brother. After the Japanese snatched Jin Tianbao's box from Pu Yi, they couldn't open it, so they sent Feng Er, who looks like Xiao Jiannan's wife, to find Lao Ba. After Fenger went up the mountain, the purpose was to learn all the unlocking skills from Lao Ba, but she hasn't learned all the skills yet and is catching up with Operation Fengtian.

I think it should be suicide.