1. Adjust the tightness of the brake cable
2. adjusting the angle of the brakes.
3. when there is noise, decelerate the state, put the brake handle brake state to release quickly, can let the brake pad and brake disc separate.
4. See the Video link of the brake adjustment：
https://www.instagram.com/tv/Cf5RZo7Ilb1/?igshid=YmMyMTA2M2Y=