What are southern indoor ski resorts?

In the warmth of southern China, winter means something different: it's a construction project. Venture into a mall to find a mountain of steel and manufactured snow, where professional skiers train and the après-ski includes spicy hot pot. This is how a region defies geography to bring the quintessential hobbies of the frozen north to its warm, southern shores. On the show: Steve, Fei Fei & Ding Heng