File photo taken in 1972 shows Xi Jinping returning home to Beijing to visit his relatives during his period of education in the countryside (XINHUA)
File photo taken in 1973 shows Xi Jinping (2nd L) posing for photo during the period when he is an educated youth in Yanchuan County of northwest China's Shaanxi Province (XINHUA)
File photo taken in 1977 shows Xi Jinping posing for a photo with a classmate while attending college (XINHUA)
File photo taken in 1979 shows Xi Jinping, then working for the General Office of the Central Military Commission (XINHUA)
File photo taken in 1983 shows Xi Jinping (L, front), then secretary of the Zhengding County Committee of the Communist Party of China, listening to opinions of villagers in Zhengding County, north China's Hebei Province (XINHUA)
File photo taken in 1983 shows Xi Jinping in his office in Zhengding County, north China's Hebei Province (XINHUA)
File photo taken in 1985 shows Xi Jinping, then secretary of the Zhengding County Committee of the Communist Party of China, posing for a photo as he visits San Francisco in the United States (XINHUA)
File photo taken in August 1987 shows Xi Jinping and his wife Peng Liyuan on Dongshan Island in southeast China's Fujian Province (XINHUA)
File photo taken in 1988 shows Xi Jinping (front), then secretary of the Ningde Prefecture Committee of the Communist Party of China, as he participates in farm work during his investigation in the countryside (XINHUA)
File photo taken in September 1989 shows Xi Jinping and his wife Peng Liyuan (XINHUA)
File photo taken in August 1993 shows Xi Jinping (1st L), then secretary of the Fuzhou Municipal Committee of the Communist Party of China, meeting with citizens in Fuzhou, capital of southeast China's Fujian Province (XINHUA)
File photo shows Xi Jinping, then vice mayor of Xiamen City of southeast China's Fujian Province, posing for a photo during an overseas visit (XINHUA)
File photo taken in December 1995 shows Xi Jinping (1st L, front), then deputy secretary of the Fujian Provincial Committee of the Communist Party of China (CPC) and secretary of the CPC Fuzhou Municipal Committee, reinforcing the downstream levee of the Minjiang River at Minhou County, southest China's Fujian Province (XINHUA)
File photo shows Xi Jinping (R, rear) with his father Xi Zhongxun (R, front), his wife (L, front) and his daughter (C, front) (XINHUA)
File photo shows Xi Jinping riding with his daughter on the back of a bicycle in Fuzhou, capital of southeast China's Fujian Province (XINHUA)
File photo shows Xi Jinping (L) accompanying his mother Qi Xin for a walk (XINHUA)
File photo taken in January 2007 shows Xi Jinping (1st R), then secretary of the Zhejiang Provincial Committee of the Communist Party of China, cooking for the aged people living in a rest home of Pingdu Township of Qingyuan County in east China's Zhejiang Province (XINHUA)
File photo taken in September 2007 shows Xi Jinping (C), then secretary of the Shanghai Municipal Committee of the Communist Party of China, talking with hearing-impaired students at Qiyin School in Minhang District of east China's Shanghai (XINHUA)
File photo taken in January 2008 shows Xi Jinping (center) visiting Tang Zhaowei, a villager of the Dong ethnic group who had been affected by snow and ice storms that hit Laoshankou Village of Gaolouping Township, southwest China's Guizhou Province, that year (XINHUA)
File photo taken in February 2012 shows Xi Jinping (2nd R, front) and his old American friends whom he met 27 years ago. They are having tea at the home of one of his friends during his visit to the State of Iowa in the United States (XINHUA)
File photo taken in February 2012 shows Xi Jinping kicking a Gaelic football as he visits the headquarters of the Gaelic Athletic Association in Ireland (XINHUA)
File photo taken in November 2012 shows Xi Jinping shakinghands with an HIV carrier as he participates in activities of the World Aids Day at Health Service Center of Puhuangyu Community in Fengtai District of Beijing (XINHUA)
File photo taken in December 2012 shows Xi Jinping eating lunch with soldiers during his inspection to the Guangzhou Military Region in south China (XINHUA)