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VCG111182550089 ©/MAXPPP - XI'AN, CHINA - DECEMBER 20: Methanol taxis covered by red cloth are seen during the launching ceremony at Daming Palace National Heritage Park on December 20, 2018 in Xi'an, Shaanxi Province of China. Xi'an launched taxis fueled by methanol (M100) on Thursday. (Photo by Ma Zhao/VCG)