"The biggest opponent for me to defend the Olympic title is myself," he said. "I have to conquer everything from my own side, such as the techniques and psychology and I have to get back to calmness from my busy life as well."

To help his case for victory in 2010, Han is currently practicing an extremely difficult new movement.

"During the summer training on water in the US, I finished a movement with the highest degree of difficulty in the world at present, but I still have no time to try in on snow," Han said. "For the next step of training, I hope to practice it on snow and try to use it at some World Cup events in the future."

Han said currently only three skiers in the world could execute that move, and only one skier landed it successfully in competition at a World Cup stop last season.

"There are so many top skiers in the men's freestyle aerials, so I have to train harder to defend (my gold) at the Olympic Games," Han said.

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