By the way, everyone will come to Japan to do well, and say goodbye to the warmth of the cups. Because Japanese people usually drink ice water, no matter how cold it is; hot water is only used to brew tea and coffee; there is no warm water. Do you know how the temperature of up to 80 degrees is reduced to the level available at home? Of course, there is a very clever folk facility - the water tower! is such a device, with bamboo branches layered, water is sent to the top, along a layer of bamboo branches, in contact with the air, the temperature is reduced to a usable level. Then use a pipe to transport to a home. The local government has a large drying tower to transport to each household; the big inn will also have a model version for residents to visit.