[InKunming--China] Visitors learn traditional Chinese paper cutting in a shopping mall at Potsdamer Platz in Berlin, capital of Germany, on Jan. 24, 2019. "Happy Chinese New Year," a series of Chinese cultural celebrations for the upcoming Spring Festival, kicked off in downtown Berlin on Thursday. (Xinhua/Shan Yuqi)

Visitors learn traditional Chinese painting in a shopping mall at Potsdamer Platz in Berlin, capital of Germany, on Jan. 24, 2019. "Happy Chinese New Year," a series of Chinese cultural celebrations for the upcoming Spring Festival, kicked off in downtown Berlin on Thursday. (Xinhua/Shan Yuqi)

A visitor looks at exhibits in a shopping mall at Potsdamer Platz in Berlin, capital of Germany, on Jan. 24, 2019. "Happy Chinese New Year," a series of Chinese cultural celebrations for the upcoming Spring Festival, kicked off in downtown Berlin on Thursday. (Xinhua/Shan Yuqi)

A woman walks past traditional Chinese decorations in a shopping mall at Potsdamer Platz in Berlin, capital of Germany, on Jan. 24, 2019. "Happy Chinese New Year," a series of Chinese cultural celebrations for the upcoming Spring Festival, kicked off in downtown Berlin on Thursday. (Xinhua/Shan Yuqi)

Artists perform in a shopping mall at Potsdamer Platz in Berlin, capital of Germany, on Jan. 24, 2019. "Happy Chinese New Year," a series of Chinese cultural celebrations for the upcoming Spring Festival, kicked off in downtown Berlin on Thursday. (Xinhua/Shan Yuqi)