Futures and spot are completely different. Spot is actually a tradable commodity. Futures are mainly not commodities, but standardized tradable contracts with some bulk products such as cotton, soybeans and oil and financial assets such as stocks and bonds as the targets.

It's hard to say how many points. Shanghai copper generally rises and falls by 6%.

Copper (Shanghai copper) code: Cu; Trading unit: 5 tons/lot; Minimum price change: 10 yuan/ton;

Quotation unit: Yuan (RMB)/ton

The price limit system originated from the early foreign securities market. It is a trading system in the securities market to properly limit the fluctuation of the price of each stock on the same day in order to prevent the price from soaring and plunging and curb excessive speculation, that is, it stipulates that the maximum fluctuation range of the trading price in a trading day is a few percent above and below the closing price of the previous trading day, and trading will stop after exceeding it.