Goldfish are on display at the Palace of Prolonging Happiness, also known as the Yanxi Palace, during an exhibition titled "Leisurely Bliss: Goldfish-themed Artifacts of the Palace Museum Collection" in Beijing, capital of China, July 30, 2019. Opening Tuesday at the Palace Museum, the exhibition shows 34 goldfish-related cultural relics from the collection of the Palace Museum together with nearly 200 real goldfish in water tanks. (Xinhua/Jin Liangkuai)