The President of the People's Republic of China is the head of state of the Chinese government. His role is largely ceremonial and he is elected by the National People's Congress. The President chooses the Premier of the State Council. In practice, the position of President is reserved for the General Secretary of the Communist Party of China.
The current president is Xi Jinping, who is also Chairman of the Central Military Commission and General Secretary. By holding those positions he is China's Paramount Leader, the most powerful man in the government.