According to the Mirriam Webster online dictionary there are multiple definitions of "enfant terrible" and both apply to China: "a person known for shocking or outrageous behavior" or "a usually young and successful person who is strikingly unorthodox, innovative, or avante garde." So much is true of all great powers in history.
China has fit the second, more flattering definition when it managed a difficult transition away from totalitarian, Maoist communism towards a significantly less oppressive market oriented authoritarian dictatorship. In doing this China has established itself as a major world economic power while dramatically improving the standards of living for millions of its citizens. China's management of this transition has been far more successful and innovative than the Russian transition. China has also shown its innovative side when it devotes large resources to researching renewable energy (a farsighted policy for a country with rapid growth and not enough domestic fossil fuel reserves to meet future needs).
But China has also fit the less flattering definition. When China hypocritically claims to be the champion of non-interference in domestic affairs by major powers all while bullying aid recipients into buying Chinese or while supporting the horribly dysfunctional North Korean regime against the interests of the North Korean people and the entire region. China also fits this less flattering definition when it reacts so childishly to the Nobel Committee's award of the Peace Prize to the Chinese dissident, Liu Xiaobo.
China is on the verge of becoming a major global power. But they are still often stuck in the mind set of a petty dictatorship. Two recent events; one in North Korea and now this Nobel Peace Prize award highlight the ways in which China's leaders are not ready for prime time.