Longevity lanterns are installed before the Qianqing Gong, or the Palace of Heavenly Purity, at the Palace Museum, also known as the Forbidden City, in Beijing, capital of China, Jan. 21, 2019. The traditional lanterns recovered by the Palace Museum in accordance with historical archives from the Qing Dynasty (1644-1911) are opened to the public Monday, as a part of the exhibition of "Celebrating the Spring Festival in the Forbidden City". (Xinhua/Jin Liangkuai)