Chinese economy is growing at a fast pace. Politically, China seems to be stable in the short to medium term.
Manufacturing
China has a trade surplus relative to the USA. It is a manufacturing hub.
Media
China, due to tight censorship, does not seem to be a hot-spot for internet businesses. It blocks Facebook, twitter - anything which can be used to organize subversion of the government.
Middle class
1.4% of urban households make more than $15,000 a year, and only 11% make $5,000-15,000. Chinese people have high savings, low borrowing tendencies, because unless they work for the state they are unlikely to receive much of a pension. Consumer inflation is officially 5.3% but probably higher.
Yuan
Yuan is set to appreciate in value relative to the dollar eventually - though it is being gamed in the reverse direction by the government restricting Yuan access to foreigners.
Lending
Chinese funds and government lend excess dollars to USA by buying US bonds. They do this in order to get rid of excess dollars and keep export profitable to their producers in the short-term, thereby encouraging further growth in the exports business.