There are two explanations for the origin of the word location:

First, China used silver dollars as its currency. When capital trading was popular, Yuan Datou (the silver dollar with Yuan Shikai's head) and Yang Long (the dragon silver dollar issued in the late Qing Dynasty) were popular, and the Yuan Datou of 10 was just 1 inch high, so the word "bit" was used to indicate the amount of money.

Secondly, there is a folk proverb that "the more money in your pocket, the longer the size of your head and face", which means that the more money in your pocket, the less you will look at people with a straight face. The more money he has, the longer he looks at people's faces, so he uses "location" to describe the amount of money.

With regard to the term position in trading, length = more, more, short = less, less.

So: long = long (buy), short = short (sell)

I can't stand so many people who don't pretend to understand. ......