A distinction should be made between electromagnetic sensitivity, and symptoms an individual labels as such. Researchers have failed in proving that those claiming sensitivity to electromagnetism can accurately determine the presence of a strong electromagnetic field. Nevertheless, the perceived symptoms are real for the patient, and should be honored as such, or until it can be demonstrated that they are psychosomatic or have some other physical source. Many people who meditate, for example, perceive energy movements in their body and learn to work with these. But a second distinction must be made between those who successfully work with unusual psychological states and these who find them debilitating. For the later, either drugs or meditative practice may or may not be helpful. Overcoming, defusing, or sublimating debilitating mental states is never easy.
If you believe in your PiXiu, then he will become your amulet. So when certain accident happens to him, it’s probably he sacrificed himself to preventing something bad happen to you. If I were you, I will clean my PiXiu and keep him in a safe place. I don’t know what your PiXiu is made of, if its made by jade or precious natural stone, you can try to sink it in mineral water. If the crack is very minor, and you’re very lucky, the PiXiu might heal the crack by himself. I saw my grandpa did that once to one of his jade, and it healed by itself in a week!