开门七件事
      Explanation: Metaphor necessary daily expenses.
      Source: Yuan Wuhan Chen, "Yu Hu Chun" The first seven things up in the morning off, fuel, rice, oil, salt, soy sauce, vinegar and tea. "Ai Qing lay a monk" bean shed gossip "X is just the classes, other people's open seven things to do, some do not arrive every dollar head."
      Examples: You are better than us, you business is small does not come to every household ~. ★ Mao Dun "Midnight" sixteen