Approximately half of GDP is from industries, in particular iron and steel, coal, machine building, armaments, clothing, petroleum, cement, chemical fertilizers, consumer durables, and food processing. With the incorporation of Hong Kong into China, major external trading partners are Japan, US, and Taiwan. Natural Resources China has significant resources of coal, iron ore, petroleum, various metal deposits, and the country has a large hydroelectric power potential. Food Chinese food has the usual role for rice as a staple, but there are large regional variations in what a 'typical' meal comprises. Major areas of regional cuisine are around Peking, with the famous Peking Duck and Mongolian Barbecue, Szechuan with its heavy use of spices, Cantonese food from Hong Kong is very varied and often features exotic ingredients, such as shark's fin, Shanghai has lots of seafood and chilli.
Green tea is a universally popular drink.
Before 221 BC rulers were referred to as kings, after the unification in 221 BC they were proclaimed as emperors. The new Republic was formed in 1912, under president Yatsen, ending the succession of Chinese rulers that we refer to as Dynasties. A summary table of the major kings and dynasties is included below, this is a simple treatment since each dynasty had a number of emperors, and at times differing parts of China were under different rulers from the same or rival dynasties. Similarly there were periods where no dynasty was dominant in China, and this leads to apparent gaps in the succession. The six dynasties period was in fact a period of struggle between the Han and Sui-T'ang, a time which in fact had some 30 significant rulers.