Forced short position refers to the operation method that investors or institutions with short positions are quickly promoted in various ways, without giving them the opportunity to open positions, and forcibly opening positions at high positions to reduce their spread income. Just like the current market, bearish investors have no chance to open positions, and if they open positions, they may face the possibility of adjustment, that is, the possibility of more somersaults will increase. Too many short positions: market manipulators use the advantages of funds or physical objects to sell a large number of futures contracts in the futures market, which greatly exceeds the ability of many parties to undertake physical objects. As a result, the futures market price has fallen sharply, forcing speculative bulls to sell contracts at low prices (kill more) and admit that they are out of the game, or be fined for breach of contract because of insufficient financial strength to receive goods, thus making huge profits.