包围城市to besiege a city

• 围城打援

  besiege a city with the aim of attacking the reinforcements which are sent to help

被包围的城市besieged city

比喻对婚姻或家庭的一种约束力bonds of marriage and family; like a besieged city, those outside want to get in, while those inside want to get out

• 刚从“围城”里走出来的张先生。

  Mr Zhang, who has just left the bonds of marriage.

• 有情人最美满的结局就是“终成眷属”，但另外一些人把它叫做“走入围城”。

  The best ending for lovers is to get "happily married", but other people call this "entering a besieged city"