The candle is obviously a high-tech material like silica gel, which is obviously used for fixing. After many tests, I finally found a cheap and convenient solution. Use two layers of electrical tape on the side of the plug that needs to be tightened. In this way, 1 is not afraid of high temperature, 2 is not afraid of electric leakage, 3 plays a certain role in buffer compensation, 4 is the most important point. If the contact is tight, you can take it yourself. Ha,Thank you again
