Among domestic futures varieties, only rebar is not affected by international trends. Due to domestic closing, external market opening turmoil, news, meetings, speeches, etc. After the domestic market opens the next day, there will be a phenomenon of high opening and low going. Of course, if you are sure, you can also make a lot of profits by jumping overnight, which is faster than the daytime shock. If you are cautious, please stay overnight. Speaking of trends, every variety has trends, such as soybean meal in the past few months, and the impact of two waves of disasters in the United States has led to record highs; Another example is rebar, the domestic steel market is bleak, and with the collateral effect of coal in the industrial chain, the overall economy can not be boosted, and successive innovations are low. These are general trends. Megatrends don't happen every day, and it may take months to appear. In futures, you usually know a lot about several varieties. No one can do anything wrong with all futures varieties, that's a braggart fool. Capital with strong risk tolerance can be made of metal, weak can be made of agricultural products, and inexperienced can stay away from sugar.