Chinese astronauts Liu Yang, Liu Wang and Jing Haipeng (L-R) sing the song Heirs of the Dragon with a children's choir during a variety show to welcome the delegation of Tiangong-1/Shenzhou IX Manned Space Docking and Rendezvous Mission in Hong Kong on Aug 11, 2012. [Photo by Edmond Tang / China Daily]

A locomotive to be exported to Estonia is loaded onto a cargo ship at Tianjin harbour in North China's Tianjin, Aug 11, 2012. China CNR Corporation Limited, one of the country's biggest train manufacturers, on Saturday began shipping a locomotive to Estonia, marking the country's first such export to the EU nation. The DF7G-E locomotive had to meet 173 stringent quality standards throughout the design, manufacturing and testing process, the company said. According to the contract, a total of 16 such locomotives will be exported to Estonia in recent two years. [Photo/Xinhua]