Rose Cheung (R), organizer of the event, introduces the Mid-Autumn Festival to Reyna Miller (L) and Christmas Stwart during the 23rd Annual Autumn Moon Festival in Chinatown in San Francisco, the United States, Sept. 14, 2013. The two-day event organized by Chinatown Merchants Association is held to hail the Mid-Autumn Festival, a traditional Chinese mooncake-eating occasion that falls on Sept. 19 this year. (Xinhua/Liu Yilin)

People take pictures of actors performing as characters in Chinese traditional opera during the 23rd Annual Autumn Moon Festival in Chinatown in San Francisco, the United States, Sept. 14, 2013. The two-day event organized by Chinatown Merchants Association is held to hail the Mid-Autumn Festival, a traditional Chinese mooncake-eating occasion that falls on Sept. 19 this year. (Xinhua/Liu Yilin)

Eva Yuan (R), introduces moon cake to Eva Lee (C) and Maria Yuen during the 23rd Annual Autumn Moon Festival in Chinatown in San Francisco, the United States, Sept. 14, 2013. The two-day event organized by Chinatown Merchants Association is held to hail the Mid-Autumn Festival, a traditional Chinese mooncake-eating occasion that falls on Sept. 19 this year. (Xinhua/Liu Yilin)

People visit the 23rd Annual Autumn Moon Festival in Chinatown in San Francisco, the United States, Sept. 14, 2013. The two-day event organized by Chinatown Merchants Association is held to hail the Mid-Autumn Festival, a traditional Chinese mooncake-eating occasion that falls on Sept. 19 this year. (Xinhua/Liu Yilin)