SPOILER: Wu and Wang found the body of Yang Daguang who was working with Sanxing and a lot of tapes that record the sound of thunder at the station. Later, Wu went to his second-uncle Wu Er-bai for help, but the latter refused him. Therefore, Wu and Wang decided to investigate om their own. They went to Yang's hometown and found that he removed a tomb to the old house of Yangs. Meanwhile, Er-bai found the weather station and found a secret room which kept murals in it.
—Yang Ge