"Mini Air Cooling Fan" can take care of weak constitutions crowd, mostly women more prone to bias negative constitution should not change in the hot environment of the impermanence of life in the summer, while the child is more in the summer to try to avoid prolonged exposure to direct hair fan . To this end, the smart fan for these two populations can be limited to the maximum amount of wind wind velocity below 80% of the range of natural wind. "Mini Air Cooling Fan" in "stepless" based on the realization of a subtle continuous variation of natural wind, while under the control of the smart chip, with some small probability to join the wind and no wind, restored as natural wind Features as random variation; in particular for children, intelligent fan with intelligent children wind option function, and its 30% lower than traditional wind fan low wind, natural wind intelligent mode. "Mini Air Cooling Fan" wind controlled within the range of 0-20%, the wind gentle and delicate continuous change, has a certain randomness, like the breeze, and like the grandmother in the hands of palm-leaf fan, ensure suitability of the child's living environment .