Athletes practice on the frozen Lake St. Moritz, a venue of speed skating for the 3rd Winter Youth Olympic Games, in St. Moritz, Switzerland on Jan. 11, 2020. A media tour was organised to visit the Youth Olympic Village and some venues in St. Moritz on Saturday. (Xinhua/Zhang Chenlin)

People chat in a dining room of the Youth Olympic Village for the 3rd Winter Youth Olympic Games in St. Moritz, Switzerland on Jan. 11, 2020. A media tour was organised to visit the Youth Olympic Village and some venues in St. Moritz on Saturday. (Xinhua/Cheng Tingting)

An athlete practices on the frozen Lake St. Moritz, a venue of speed skating for the 3rd Winter Youth Olympic Games, in St. Moritz, Switzerland on Jan. 11, 2020. A media tour was organised to visit the Youth Olympic Village and some venues in St. Moritz on Saturday. (Xinhua/Zhang Chenlin)

A skeleton athlete practices at St. Moritz Olympia Bob Run, a venue of the 3rd Winter Youth Olympic Games, in St. Moritz, Switzerland on Jan. 11, 2020. A media tour was organised to visit the Youth Olympic Village and some venues in St. Moritz on Saturday. (Xinhua/Zhang Chenlin)

People work in a cafe of the Youth Olympic Village for the 3rd Winter Youth Olympic Games in St. Moritz, Switzerland on Jan. 11, 2020. A media tour was organised to visit the Youth Olympic Village and some venues in St. Moritz on Saturday. (Xinhua/Cheng Tingting)

Photo taken on Jan. 11, 2020 shows an athlete dormitory for the 3rd Winter Youth Olympic Games in St. Moritz, Switzerland. A media tour was organised to visit the Youth Olympic Village and some venues in St. Moritz on Saturday. (Xinhua/Cheng Tingting)

A skeleton athlete practices at St. Moritz Olympia Bob Run, a venue of the 3rd Winter Youth Olympic Games, in St. Moritz, Switzerland on Jan. 11, 2020. A media tour was organised to visit the Youth Olympic Village and some venues in St. Moritz on Saturday. (Xinhua/Cheng Tingting)