If the capacitor is connected reversely, it is normal to cause an explosion, because you do not understand the working principle of the capacitor. The negative and positive reverse connection will make the positive and negative ions in the capacitor collide violently. However, the energy generated by the collision cannot be released. If it is released, the result must be an explosion. In addition, the materials of the two electrode plates of the ceramic capacitor are the same, so there will be no collision between electrons.