People perform Chinese martial arts during a traditional temple fair in the Chinatown in Belgrano of Buenos Aires, capital of Argentina, Sept. 11, 2011. Overseas Chinese in Argentina held various Chinese traditional activities in the Chinatown on Sunday. The Mid-Autumn Festival falls on Sept. 12 this year according to the Chinese lunar calendar. It is an important Chinese festival and a chance for family reunion under the full moon, a symbol for happiness and prosperity. [Xinhua]