President of the People's Republic of China (PRC) from 2003 to 2013, Hu Jintao is believed to have given shape to the belligerent China that Xi Jinping unleashed on the world. He was conservative with political reforms and reintroduced state control in several sectors. Known for his reserved and modest leadership style, his tenure marked consensus based rule and collective leadership.
Chiang Kai-shek was a Chinese revolutionary who led the Republic of China between 1928 and 1975, first in mainland China until 1949 and later on in Taiwan until his death. He is credited with successfully leading the Northern Expedition against the Beiyang government, achieving Chinese unification. He was involved in a civil war with Communist Party of China, which he lost in 1949 and retreated to Taiwan.
Chinese politician, Jiang Zemin, served as General Secretary of the Chinese Communist Party from 1989 to 2002. Qualified as an engineer, he joined the Chinese Communist Party when he was in college. Rising through the ranks, he eventually became a member of the Central Committee of the Communist Party, Minister of Electronic Industries.
Xi Jinping, President of China since 2013, is said to be the most powerful Chinese leader since Chairman Mao Zedong. He is an authoritarian leader and his reign is marked by an increase in censorship and deterioration in human rights . Also, China’s foreign policy under Xi has been more assertive, leading to a deterioration of relations with many countries.
Yuan Shikai was a Chinese government and military official who reigned as the emperor of the Empire of China from 1915 to 1916. He is credited with introducing several modernization projects to the dynasty. He is also credited with organizing and training one of the first modern armies of China.

Li Yuanhong was a Chinese politician who held the office of the President of China for a year each on two different occasions. A respected politician, Li Yuanhong played a critical role in avoiding China's participation in the First World War. He then resigned from his post in 1917, only to be elected again as president of China in 1922.