Why do the Xiaomi fans have damaged shell?

Several factors will lead to the shell of the fans damaged. Fans can get knocked or dropped, causing the shell of the fans be damaged. Over time, regular use can cause plastic or metal parts to become brittle or worn out, leading to cracks or breaks. Dust and debris accumulation can put stress on fan components. If the fan is not cleaned regularly, this can lead to overheating and damage.
If the fan does not experience physical damages, this is the gate left when the fan housing is cast and finalized. It is a normal process phenomenon and not a damage problem. Please feel free to use it.