Entry point: when the short-term moving average begins to break through the long-term moving average and presents a golden cross, when the short-selling arrangement of the moving average changes and the stock price is at a low level, the volume increases. When the stock price falls, a moving average plays a strong supporting role, and the shape of the moving average gradually changes into a bullish shape. Exit point: whether it is EMA trading system or not, as long as the market deviates greatly from its own expectations, it can be out.