Areial photo taken on Dec. 26, 2018 shows the lit outline of the Lighting Hall, an octahedral architecture in China's Tang Dynasty style, at the Sui and Tang Dynasties Relic Garden in Luoyang city, central China's Henan Province. Luoyang is one of the cradles of Chinese civilization and served as the capital of several dynasties in Chinese history. (Xinhua/Feng Dapeng)