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However, less than a week after the joyful opening ceremony, the Subway Line 1's Chengzhan and Xianghu stations experienced continuous water leaks. Although the subway's operator explained the causes of water leaks in order to restore public confidence in its safety, it was the explanation that exposed a few problems concerning the subway's safety. First, they "forgot" installing special drainage pipelines in Chengzhan Station where the soil has high water content. Second, there were serious quality problems with the expansion joints of the water pipes in Xianghu Station, which led to water leaks.
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