[Photo by Wei Xiaohao/China Daily]

"I feel a sense of achievement after overcoming unexpected obstacles," says Chen, the champion of a national ice climbing tournament held in Beijing last month.

"It is like going deep into the mountains knowing well that there are tigers there."

He also says that regular practice and planning can help reduce risks significantly.

"It is important to understand the ice," says Chen.

"Before you climb, it is also important to do a risk evaluation."

In China, the ice climbing season is short.

The low temperatures and lack of sunshine that keep waterfalls frozen usually last only two to three months.

But this is what makes the sport truly special.

"Seasonality is probably the most alluring part of ice climbing," says Chen.

"When the season is over, a long wait lies ahead."

"It's already February, and this year's climbing season is almost over," he adds.

"But I am already waiting for the next season."