Zhujiang New Town Automated People Mover System (Chinese: 珠江新城旅客自动输送系统; pinyin: Zhūjiāng Xīnchéng Lǚkè Zìdòng Shūsòng Xìtǒng) or APM Line is an automated people mover (APM) system mainly serving the Zhujiang New Town area in Guangzhou the new CBD of the city. It is an underground and automatic operating system. In terms of construction cost per kilometre it is the most expensive APM system in the world yet it is the shortest and least used line in the Guangzhou Metro network.