"Line 8" . . . . . . "Line B1" . . . "subway system" . . . . "Line Z4" . . "1" . "8" . . . . "2001" . "2001-10-09" . . . "Line 11" . . . "2" . . "Tianjin Metro" . . "3" . . "Line 10" . . "2006-06-12" . "1984" . . . "2" . "Tianjin" . "1984-12-28" . "2006" . "164" . . "Tianjin Metro" . . . . "Line 7" . . "408529000" . "Tianjin Subway" . .