A staff member pours a glass of beer for a visitor at the booth of German state Bavaria during the International Green Week (IGW) Berlin in Berlin, capital of Germany, on Jan. 18, 2019. The IGW Berlin, an international exhibition of the food, agriculture and gardening industries, opened on Friday and will last until Jan. 27, attracting more than 1,700 exhibitors from all over the world. (Xinhua/Shan Yuqi)