What does the license plate shake mean?

That is, if you want to buy a car, apply first and get the application code;

After the approval, confirm that the application code is valid and participate in the lottery;

The index code is obtained through a lottery.

A lottery is like a lottery, once a month. If you win this month, you are eligible to buy a car and get a license. If you don't win, you can continue next month ... until you win (oh, this is my understanding, I hope it will help you).