1. First, the left arm extends into the left armhole of the vest;

2. Then, put the suit into the left armhole of the vest as much as possible;

3. Step 3, the left half of the vest comes out of the suit (at this time, half of the suit has been stuffed into the back);

4, the fourth step, half vest from the back to the right, put the right arm through;

5. Step 5: (At this time, there should be only one cuff on the right arm of the vest) Pull the vest out of the right sleeve of the suit.