If you open more than one order and the contract has a daily limit, of course you can close the position, because you can't buy a bunch of orders if you want;

If you open an empty order and the contract has a daily limit, you may not be able to close your position, because it is very common for large orders to close their positions after the daily limit. If you want to be flat, you must hang up a single line early, but whether you can queue up can only be resigned;

The reason for the down limit can be analogized.