Spot premium: refers to that the spot price on that day is higher than the real-time selling price of Shanghai futures on that day.

Spot discount: refers to that the spot price on that day is lower than the real-time selling price of Shanghai futures on that day.

The spot copper price is based on the real-time selling price of copper futures on the current day of the month, and with the increased discount amount, the spot copper price generally fluctuates with the change of the real-time selling price of futures. For copper, it is necessary to pay attention to the futures price of Shanghai copper. The premium range will basically not differ too much, and the change range will not be particularly large. So when you want to buy, you will see that the futures price has gone up, and the spot price will generally go up.

As for LME, its price trend affects the trend of Shanghai copper futures, thus affecting the spot trend. In China, just look at the futures price of Shanghai copper ~