Marriage was a grave where the person inside wanted to come out and the person outside wanted to go in. This was a famous argument in Fortress Besieged that expressed the nature and attraction of marriage. In this story, the marriage between the protagonist Fang Hongjian and his wife Zhao Hsin-mei was described as a besieged city. The people inside the city longed to escape from the besieged city, while the people outside wanted to rush into the besieged city. This metaphor vividly expressed the oppression and restraint of marriage and the fragility and contradiction of love.