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China's longest zip lines have opened to the public in the southern city of Guangzhou. The lines stretch 1,500 meters long and connect Guangdong provincial capital's Baiyun Mountain to the Huangpodong Reservoir. There are a total of six zip lines. Tourists need to take a weigh-in before being assigned to the suitable zip lines, according to their weights. Visitors can reach speeds of up to 120 km/h and the thrilled journey takes only two minutes, which takes around an hour on foot.