In Zhao Xinmei's dinner with Su Wenwan and Fang Hung-chien, Su Wenwan said, "However, it's not the bird cage, but the besieged castle fortresse assiegee. People outside the city want to rush in and people in the city want to escape." Qian Zhongshu told the story of "besieged city" with a dialogue that Su Wenwan and Fang Shenming showed off to each other, saying.