The mentality of merchants will have a certain impact on their behavior. When the market is good, merchants will replenish their stocks within their power, actively purchase and activate intermediate demand, which is also a positive impetus to steel prices. In the case of bad market conditions, merchants are more bearish or wait-and-see, especially under the pressure of their own large inventory and steel mills' settlement of payment at the end of the month, merchants will cut prices and throw goods, which will aggravate the confusion of market prices and disrupt the normal steel market. Summary: Macro and micro also influence each other. For example, the import and export situation affects the supply and demand situation, and the national policy also affects the steel mills ..... At the same time, the macro and micro aspects also influence each other. These factors that affect steel prices cannot work at the same time. In a certain period of time, which factor is more prominent will play a decisive role in the change of steel price. The most fundamental factor that determines the price trend is the supply and demand situation.