The following is an introduction to the EMA:

Average, referred to as MA, originally meant moving average. Because we make it linear, it is generally called moving average, or moving average for short. Is the sum of the closing prices in a certain period of time divided by the period. For example, the daily line MA5 refers to the closing price in five days divided by five. The moving average was put forward by Joseph E.Granville, a famous American investment expert, in the middle of 20th century. The theory of moving average is one of the most widely used technical indicators, which helps traders to confirm the existing trend, judge the coming trend and find the trend that will be reversed if it is delayed excessively.