1.816329, 500,
                117.223694, 31.81627, 500, 117.222769, 31.817007, 500, 117.222259, 31.816871, 500, 117.221922, 31.816707, 500,
                117.221653, 31.816788, 500, 117.22151, 31.817002, 500, 117.221039, 31.816891, 500, 117.220395, 31.816352, 500,
                117.220166, 31.815734, 500, 117.219804, 31.815607, 500, 117.219461, 31.815122, 500, 117.21878, 31.814846, 500,
                117.218297, 31.815275, 500, 117.217975, 31.815172, 500, 117.217142, 31.815229, 500, 117.216753, 31.8