Lei Suisheng is the oldest soldier in the seventh company. He ranked 17 in Wu's notebook, and he was the only person alive on the first page. Lei Gong is not only old, but also old. According to Wu's records in the film, Lei Gong was born in 19 10, while the War to Resist US Aggression and Aid Korea took place in 1950, so it can be inferred that Lei Gong is 40 years old. No wonder even the seven soldiers called him Dad Lei!

Lei Suisheng's personality characteristics are obvious. He is mature and optimistic, and he is also the pistachio of Qilian soldiers. Wu's younger brother often fights with Lei Gong in the film, but Lei Gong doesn't care at all. They are like father and son, and Lei Gong will always protect Wu Wanli!