American soybean literally means American soybean and soybean oil, and the weight of American soybean here is the weight of American soybean oil futures.

Futures weight refers to the weighted average of futures trading. In futures, IF weighting means the weighted average of contracts in several specIFic months, IF is the abbreviation of futures contract, and if means futures with the Shanghai and Shenzhen 300 index as the contract target.

Ten-bond weighting refers to the weighted index of 10-year treasury bonds, which is obtained by weighted average of the prices of ten-year treasury bonds contracts according to their respective positions.