A Chinese primary school teacher explains to her students about information of the Chinese national flag at a ceremony marking the first day of the new semester in the city of Hanshan in east China's Anhui Province, Sep. 1, 2009. School students across China started Tuesday their new semester. [Xinhua]

Wu Bangguo (L), chairman of the Standing Committee of China's National People's Congress, is welcomed upon his arrival at the airport of Havana, Cuba, Sep. 1, 2009. [Xinhua]