Hello: Regarding your inquiry, the sharp squeaking noise during braking is mainly related to the material of brake pads. You can find a safer road section, and then brake suddenly while driving (about 40 miles per hour), so that the hard spots on the brake pads can be ground, and the abnormal sound will be eliminated after repeated times. Or remove the brake pad and polish or chamfer the brake pad, which will also effectively reduce the abnormal noise generated during braking. All vehicles will have this problem. This abnormal sound will not affect the normal use of the brake system, so it can be ignored. Please feel free to use.