The position held after short selling futures contracts is called a short position, or short position for short.

There is a video on YOUKU, which is a technical explanation from a long time ago. It refers to the Taiwan market and is the originator of Chinese technology. There are many professional terms in it

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However, I suggest that the poster should read more investment books. Technical things can be used to learn about the market, but they cannot be used to predict market trends. They do not constitute the cornerstone of wealth.