How to get through the pool in Resident Evil 2?

First operate the pool water control switch, drain the water, go down, and push the three wooden boxes into a straight line. Specific operations: After draining the water, go down the stairs next to the switch. If you are there, press the M key to look at the map. You will see three wooden boxes but they are not lined up in a row. Climb up the middle wooden box first, don’t tell me you can’t climb. After jumping down, push the innermost wooden box away, then climb out, push the middle wooden box to the innermost, and then push the innermost box so that there is no gap between it and the middle wooden box. Finally, push the outermost wooden box inside so that the three wooden boxes line up in a straight line. Be careful not to press the accelerator V key when pushing, only use the direction keys (if you push it wrong, go out and come back in) and then operate the switch to refill the water, so that the wooden box can float up. You will know how to get it later.