The Swiss solar-powered plane Solar Impulse 2, HB-SIB, prepares to land at Chongqing Jiangbei International Airport in Chongqing, March 31, 2015. [Sina Weibo]
Solar Impulse 2 landed in Chongqing, China, on Tuesday, the fifth-leg of the Swiss-developed airplane's quest to become the first aircraft to fly around the world powered only by the sun.
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