The highest and lowest prices of futures depend on the balance of power between long and short sides. The futures market is a bilateral market. Some people are bearish (down) and some are bullish (up). Their forces collide for a period of time, then the price will naturally rise. On the contrary, this is similar to the stock market, except that both long and short sides in different markets can switch to each other at any time, because if short sellers want to sell contracts, they should buy contracts and close their positions in the market. This time and space will be transformed into multi-party forces, and multi-party closure will naturally be transformed into. I hope my answer can help you understand the futures market.