Once the boss took his secretary on a business trip and opened two rooms in the evening. After arriving at the room, the secretary sent it to the boss by mobile phone.

1 1-9=5, the real answer should be 2, with an extra 3, suggesting that the secretary asked the boss if he could accommodate mistress; Good night, if you leave late, it will be a rest day. If you leave safely, you will be a housewife, which means that you are free and have a wife at home. The secretary has made it clear that she has no face to stay in the company, so she resigned.