风扇模块有三个引脚，分别是VCC，GND，IN，输入低电平，驱动电机转动，是风扇转动，从而起到灭火作用，20cm左右即可灭火蜡烛(The fan module has three pins, respectively, VCC, GND, IN, low input level, drive motor rotation, fan rotation, thus playing a role in fire, 20cm or so can extinguish candles)

以1周的每一天为单位，统计蜡烛的几种平均值(The average values of candles are counted on the basis of 1 days per day.)

MT4指标，K线突破或者反转能变色，一目了然。(MT4 indicators, K line breakthrough or reversal can change color, at a glance.)

MT4版本的多周期K线指标，很实用的指标(MT4 version of the multi-cycle K-line index, very practical indicators)