Many people are used to letting the food cool down before putting it in the refrigerator. In fact, this is not only unnecessary, but it will increase the chance of bacterial growth when the temperature drops below 60 degrees.
The bacteria began to multiply. When the temperature dropped below 7 degrees, most of the bacteria began to go to sleep. If they were not covered or cling film, the bacteria in the air would fall into the bowl.
So don’t worry about putting hot rice into the refrigerator will increase his burden, at most, it will consume more electricity.