Aa4

General Info This user is male. This user is a Scorpio. It is approximately 6:53 AM where this user lives. This user uses Google as a primary search engine. This user uses Wikipedia as a primary point of reference. zh 該用戶的母語是中文。 该用户的母语是中文。 en-3 This user can contribute with an advanced level of English. This user supports Arsenal.

Aa4 (simplified Chinese: 杨碧春秋; traditional Chinese: 楊碧春秋; pinyin: Yáng Bìchūnqiū; born October 30, 1980 in Shanghai, People's Republic of China) is learning how to edit web pages of Wikipedia. He graduated from Shanghai High School in 1998 after a 7-year spell there, and later obtained B.S. from East China Normal University in 2002. Since September 2001, he has been teaching chemistry and math at Shanghai High School International Division.