The high-voltage battery fan has been successfully cleaned

Last night, I used a tool to remove the plastic plate on the right rear side and successfully took down the fan. I found it was indeed very dirty. I don't know how many years it had not been cleaned. The fan blades were almost clogged. After cleaning, I used Dr. Prius to forcefully increase the fan speed, and the sound indeed became much quieter
When dismantling the plastic cover plate at the back, everyone should pay attention to the two positions I have marked. There are two screws that need to be unscrewed. At first, I didn't pay attention and thought that just opening the plastic buckle would be enough. However, I believe few people are as careless and unfamiliar with this car as I am. Just a small reminder，lol


Here's another question. When your tire is flat and you need to change to the spare tire, you find that the screws have been tightened too tightly by the repair shop's tools, and you can't unscrew them yourself. What should you do?
Last time, my tire was punctured on the side of the road. When I tried to change the spare tire myself, I encountered this embarrassing problem. When I used all my strength to tighten the screws, I heard a "creaking" sound. Should I continue to apply force, or is my way of applying force incorrect, causing the direction to be wrong and thus producing the strange noise?