The old jade here gives me the feeling that it is ancient, customary and traditional. I don't know who gave you this old jade and what it means to you. What I said depends on your own situation from my feelings.
You dream of biting people. One possibility is that you want to break old ideas and break the rules. Another possibility is that you hate the person who gave you jade, and you want to crush him. Maybe it's because he made you extremely angry and angry at a certain moment. Or maybe you want to break some kind of imprisonment, which was brought to you by the owner of jade.