Introduction to the Siheyuan: The Siheyuan is a traditional residential form in Beijing. It has a long history, rigorous layout, spacious courtyards, quietness, comfort and strong defensive properties. The large and small "Siheyuan" in the film and television city are imitations of the Siheyuan in Beijing. built. It is said that Lai Changxing, the largest smuggler in the country and the former leader of Xiamen Yuanhua Group, lived here before the incident.