An old well in Sichuan suddenly heated up to 70 degrees Celsius, then after some of the people concerned to investigate, suspected to be connected to this old well of a short circuit of an electric wire, leading to the inside of the water temperature rise is so high degrees Celsius.
So, we still need to use the scientific way to explore some of these problems, need to use the current means, a little to rule out possible causes.
For example, here it was a short circuit that caused energy to be transferred to the water that raised the water's temperature so much.