that means I want to sell and if it's four fingers up,

就表示我要卖出竖起四根手指
that means four contracts.

表示四份合约
If you put it this way, it would be buying;

如果你这样摆就表示买入
I want to buy four contracts.

我想买入四份合约
Those hand signals developed in Osaka

这些手势在大阪得以发展
and they became a mainstay of futures markets after that.

成为了后来期货市场的重要特征
Another thing they did in Japan to create the central market

在日本为了建立交易中心
was to standardize the rice.

另一件事就是对大米设定标准
Now, this is very important;

这是非常重要的
if you go shopping around to different warehouses to try to buy rice,

如果你为了买入大米穿梭在不同仓库间
you'll get some warehouse who says,

有些仓库的人员会说
well I'm charging a higher price

我给的价高