The taboos of this bracelet are as follows:

1. Do not expose it to high temperatures: long-term exposure to high temperatures will cause the bracelet to dry out and crack.

2. Do not keep it in a humid environment: Being in a humid environment for a long time will cause the bracelet to become mildewed.

3. Do not expose it to sunlight: Exposure to sunlight will cause the bracelet to crack.

4. Do not collide or squeeze: Collision and squeeze will cause the bracelet to wear or deform.