Jīng Jiǔ Tiě lù / lián jiē / Běi jīng / hé / Jiǔ lóng / cù jìn / le / yán xiàn / dì qū / de / jīng jì / fā zhǎn京九铁路连接北京和九龙,促进了沿线地区的经济发展。The Jingjiu Railway connects Beijing and Kowloon, promoting economic development along the route.