1. Winter wheat futures: Winter wheat is one of the important food crops in China, and its price is affected by supply and demand and climate factors. Under normal circumstances, cold weather will restrict the growth of winter wheat to a certain extent, leading to a decrease in supply and an increase in price. In warm winter years, due to high temperature, suitable precipitation and other factors, the national crop growth conditions are better. In this case, relatively sufficient supply will increase the pressure of market competition and have a negative impact on the price trend.

2. Energy futures: Oil, natural gas and other energy products have special needs in the cold season. When the cold wave comes, the demand for heating will increase, especially in the northern region. When a large number of people use heating equipment (such as heating boilers), they need to consume more energy resources (such as fuel). This process may lead to an increase in demand for related energy products and changes in market prices.