With 42 days to go, China's largest-ever winter games vowed to strike heavy punches against doping and unfair play .

"We will firmly keep our zero-tolerant policy against doping to ensure a clean and fair Games," said Liu Peng, Minister of the General Administration of Sport of China.

All the delegations' leaders signed pledge to fight against doping.

The Xinjiang 2016 will be the first national winter games since China won the bid on July 31 to host the 2022 Winter Olympic Games.

"Gold medal is not all that matters," said Liu. "We've reformed the Games in six ways to guide all participants to a healthier value judgement." 

Liu believes that by lifting Olympic events proportion from 62 percent in the last edition to 89 percent next year, canceling ranking list of all delegations, stopping to add Winter Olympics results into National Winter Games etc., will help the system to reach its goal -- preparing for the first-ever Winter Olympic Games in China.

The 13th National Winter Games is scheduled from Jan. 20-31, 2016 in Xinjiang, with record 52 delegations competing in five sports, 11 disciplines and 97 events.