Passengers get on a subway train at the Sanlin Station of the Subway Line 11 in Shanghai, East China, Aug. 31, 2013. The second phase of Subway Line 11 of Shanghai began trial operation on Saturday, which brought the total length of the Subway Line 11 to 65 kilometers.(Xinhua/Ding Ting)

Passengers take the Subway Line 11 in Shanghai, East China, Aug. 31, 2013. The second phase of Subway Line 11 of Shanghai began trial operation on Saturday, which brought the total length of the Subway Line 11 to 65 kilometers.(Xinhua/Pei Xin)

Passengers prepare to get on a subway train at the Sanlin Station of the Subway Line 11 in Shanghai, East China, Aug. 31, 2013. The second phase of Subway Line 11 of Shanghai began trial operation on Saturday, which brought the total length of the Subway Line 11 to 65 kilometers.(Xinhua/Pei Xin)

Passengers wait for the subway train at the Oriental Sports Center Station of the Subway Line 11 in Shanghai, East China, Aug. 31, 2013. The second phase of Subway Line 11 of Shanghai began trial operation on Saturday, which brought the total length of the Subway Line 11 to 65 kilometers.(Xinhua/Xu Zhengkui)

Passengers go through automatic ticket gate at the Sanlin Station of the Subway Line 11 in Shanghai, East China, Aug. 31, 2013. The second phase of Subway Line 11 of Shanghai began trial operation on Saturday, which brought the total length of the Subway Line 11 to 65 kilometers.(Xinhua/Ding Ting)

Passengers check the roadmap of the Subway Line 11 in Shanghai, East China, Aug. 31, 2013. The second phase of Subway Line 11 of Shanghai began trial operation on Saturday, which brought the total length of the Subway Line 11 to 65 kilometers.(Xinhua/Pei Xin)

Passengers get off a subway train at the Shanghai Swimming Center Station of the Subway Line 11 in Shanghai, East China, Aug. 31, 2013. The second phase of Subway Line 11 of Shanghai began trial operation on Saturday, which brought the total length of the Subway Line 11 to 65 kilometers.(Xinhua/Xu Zhengkui)

Staff members paste a platform sign at the Sanlin Station of the Subway Line 11 in Shanghai, East China, Aug. 31, 2013. The second phase of Subway Line 11 of Shanghai began trial operation on Saturday, which brought the total length of the Subway Line 11 to 65 kilometers.(Xinhua/Pei Xin)

Passengers take the Subway Line 11 in Shanghai, East China, Aug. 31, 2013. The second phase of Subway Line 11 of Shanghai began trial operation on Saturday, which brought the total length of the Subway Line 11 to 65 kilometers.(Xinhua/Xu Zhengkui)

Passengers wait for the subway train at the Sanlin Station of the Subway Line 11 in Shanghai, East China, Aug. 31, 2013. The second phase of Subway Line 11 of Shanghai began trial operation on Saturday, which brought the total length of the Subway Line 11 to 65 kilometers.(Xinhua/Xin Yaojin)