Ma Guo Qiang's Mysterious Baggage

Li Shi Qing and Xiao He Yun go in to talk to the police and lie about why they stopped Lu Di from getting on the bus. They tell the police about suspicious people on the bus. They start investigating Ma Guo Qiang and Li Shi Qing stays to learn more clues. Lu Di's diary is brought to the police station and they learn that Li Shi Qing and Xiao He Yun know about the explosion. Getting back into the loop they decide to investigate Ma Guo Qiang and his bag. Lu Di did not enter the loop.