China's treasury bond futures closed mixed on Monday, with the contract for settlement in December 2017 closing 0.20 percent lower at 97.50 yuan (about 15 U.S. dollars).

The March 2018 contract closed 0.20 percent lower at 97.64 yuan. The contract for settlement in June 2018 ended 0.04 percent higher to 97.82 yuan.

The contracts are agreements to buy or sell treasury bonds at a predetermined price and 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 Sept. 6, 2013.