Chasing up and killing down is a technical term in financial markets. It is a trading mode of financial technology, which is contrary to the operation mode of bargain-hunting. Specific operation mode: buy financial products when the prices of financial markets (stocks, futures, foreign exchange, etc.) rise. ) rise, with a view to rising more, and then sell it at a higher price for profit. Sell financial products when the price of financial market falls, and buy them back at a lower price in order to obtain the benefits of falling prices.