Photo taken on April 18, 2018 shows the opera tower of the Shan-Shaan Guildhall architectural complex in Sheqi County, central China's Henan Province. The Shan-Shaan Guildhall was co-built by merchants from Shanxi and Shaanxi Provinces who then lived in Sheqi County in Qing Dynasty (1644-1911). The Guildhall possesses a style of Chinese imperial architectures. (Xinhua/Feng Dapeng)