In a certain place, there is a happy and joyful family of three - father, mother, and Xiao Wu. Xiao Wu's father runs a small business serving the people around him. Often, just as the food is about to be eaten, there are customers rushing home in a hurry to deliver it. Xiao Wu's father would immediately put down his dishes, ride his motorcycle, and disappear into the night.
At the dinner table, there were only Xiao Wu's mother and her son left. The mother kept muttering, "Your dad won't know when he'll be back soon. The food has already cooled down, and even the cold winter food has made his stomach feel cold. Every time he wants to heat it up, he's afraid of trouble, so he just eats it hastily.
When would it be good if there was something that could keep the food cool. These casual words have always been deeply remembered by the young Xiao Wu. Twenty years later, after multiple attempts, Xiao Wu finally changed the insulation form of electricity used for decades and designed the first latest energy-saving, environmentally friendly and energy-saving technology product.