[2] Since opening, it has been heavily trafficked and became a major transport option for urban workers.

This is to alleviate surges in passenger traffic at Buji, since the opening of the connecting Shenzhen East.

[4] The first phase of the line from Shuanglong to Caopu stations officially began operations on 28 December 2010.

The third phase of the line from Futian Bonded Area to Yitian stations, opened on 28 October 2020.

The fourth phase of the line from Shuanglong to Pingdi Liulian stations, opened on 28 December 2024.