$BTC Inter-month Arbitrage: Based on the price relationship between contracts of the same futures variety with different expiration months on the same exchange. When the price difference between the near-month contract and the far-month contract deviates from a reasonable range, buy the relatively undervalued contract while selling the overvalued contract.

Inter-variety Arbitrage: Arbitrage using the price ratio relationship between related varieties. For example, soybeans and soybean meal, when the price ratio between the two deviates from the normal range, corresponding buying and selling operations can be performed.