BEIJING -- China's 10-year treasury bond futures closed mixed Tuesday, with the contract for September 2020 closing flat at 99.20 yuan (about $14.23).

The contract for settlement in December 2020 closed 0.01 percent higher at 98.50 yuan. The contract for settlement in March 2021 closed 0.04 percent higher at 98.04 yuan.

The contracts are agreements to buy or sell treasury bonds at a predetermined price on a set date. They allow investors to bet on and profit from the movements in the value of the bonds.

The treasury bond futures were launched at the Shanghai-based China Financial Futures Exchange and started trading on March 20, 2015.