Clan relatives of the descendants of Zhu Xi, a renowned Chinese ideologist, philosopher and educator during the Southern Song Dynasty (1127-1279), attend a ritual during an activity commemorating the 885th anniversary of the birth of Zhu in Wuyishan city, Southeast China's Fujian province, Nov 15, 2015. The sixth cross-strait cultural festival on the study of Zhu Xi is held on Sunday. [Photo/Xinhua]