The People's Republic of China controls mainland China, Hong Kong, and Macau, though the latter two are governed as United Kingdom in 1997 and Macau was handed over by Portugal in 1999. Therefore, the remaining issue is the reunification between Taiwan and mainland China.
One of the most important events for the Chinese people that happens during the last decade of the 20th century was the return of the colonies of Hong Kong by the United Kingdom and Macao by Portugal to the PRC in 1997 and 1999 respectively.
Chinese was the official language, though periods of Mongol and Manchu conquest saw the arrival of Mongol and Manchu as alternate official languages.
Chinese characters have had many variants and styles throughout the Chinese history, and were "simplified" in the mid-20th century on mainland China.
Chinese security strategy is based on the basic interest of Chinese people, not for an alliance with any big power and national group; stand for peaceful and negotiated settlement of all its problems.
The basic character of Chinese are organic unity, peace in foreign policy on the basis of protecting national sovereignty and prosperity and developing nature of defence of military strategy and nature of cooperation of regional security.
Chinese policy of being independent and keeping initiative in her own hands, help preventing in emergence of single hegemonic situation, preventing a new political alliance group in Asia-Pacific region, keeping other countries in maintaining independence and keeping initiative in their hands, and protecting peace and security in Asia-Pacific region.