Some coins are ambushed in the support range, but it only falls to the upper edge of the support level; Some coins ambush on the upper edge of the support level, and as a result, it directly falls through the entire support range. Is it the banker's control? It can only be said that it is one of the possibilities. In fact, many times, the price of the pin is determined by the buying and selling power of the market at that moment. For example, the point of short-term downward insertion may be determined by the large order of the market take profit or stop loss at that moment.