1. The market expectation and demand for different commodity varieties will affect the allocation of funds. If investors expect the price of a certain agricultural product or metal to rise, they tend to put more money into the futures market of that variety in order to pursue profits.

2. The relationship between supply and demand is an important factor affecting commodity prices. When the supply of a commodity is insufficient or the demand increases, the price rises, attracting more funds to flow into the futures market of that commodity.

3. Different investors have different risk preferences and investment strategies. Some investors prefer to invest in the relatively stable agricultural products market, while others prefer the high-risk and high-return metal or energy market.