Tourists visit the ancient citadel of Yongning Town in Shishi, southeast China's Fujian Province, Oct. 2, 2018. Dating back to the 14th century, the ancient citadel of Yongning Town used to be a coastal fortification against pirates. Nowadays, the lifestyle, culture and general layouts within the settlement remain intact under protective measures by local authorities. (Xinhua/Song Weiwei)