Line 21 (Guangzhou Metro)

Line 21
Line 21 train near Jinkeng
Overview
Other name(s)M21 (plan name)
Eastern New Town express line (Chinese: 东部新城快线)
StatusOperational
OwnerCity of Guangzhou
Termini
Stations20
Service
TypeRapid transit
SystemGuangzhou Metro
Services2
Operator(s)Guangzhou Metro Corporation
History
Opened28 December 2018 (2018-12-28)
Technical
Line length60.3 km (37.5 mi)
Track gauge1,435 mm (4 ft 8+12 in)
ElectrificationThird rail, 1,500 V DC
(Overhead lines with same voltage installed in depot)
Operating speed120 km/h (75 mph)
Route map

Zengcheng Square
Zhonggang
Xiangling Stabling Yard
Shantian
Zhucun
Fenggang
Kengbei
Zhongxin
Zhenlong Depot/ Connection to Line 14
Zhenlong
 14 
 14  to Xinhe
Zhenlongxi
Jinkeng
Guangshi Railway
 THP1  to Xinfeng Lu
Changping
 THP1 
Shuixi Stabling Yard
 7  to Meidi Dadao
Shuixi
 THP1   7 
Suyuan
 6 
Connection to Line 6/  6 
to Xunfenggang
to Xiangxue
Science City
Shenzhoulu
Tianhe Smart City
Daguannanlu
Huangcun
 4 
Tangdong
Guangfo circular IR
 11  Outer Circle
 13  to Xinsha
Connection to Line 11 and Line 13
Tianhe Park
 11   13 
 13  to Chaoyang
 11  Inner Circle
Line 21
Simplified Chinese广州地铁21号线
Traditional Chinese廣州地鐵21號線
Transcriptions
Standard Mandarin
Hanyu PinyinGuǎngzhōu Dìtiě Èrshíyīhàoxiàn
Yue: Cantonese
Jyutpinggwong2 zau1 dei6 tit3 ji6 sap6 jat1 hou6 sin3

Line 21 of the Guangzhou Metro (Chinese: 广州地铁21号线; pinyin: Guǎngzhōu Dìtiě Èrshíyīhàoxiàn) is a rapid transit rail line in Guangzhou.

Line 21 is an express suburban metro line along with Line 14. Both lines were envisioned to connect and promote development in the northeast regions of Guangzhou. Line 21's unique role means that it has many design features that make it different from other Guangzhou metro lines. For example, several stations have passing loops to allow for express and local stopping patterns and trains reach a maximum service speed of 120 km/h (75 mph). These considerations allow for passengers to travel from outer Guangzhou to the city center in one hour. Line 21 runs from Tianhe Park in Tianhe to Zengcheng Square in Zengcheng. The line is about 60.3 km (37.5 mi) long. The line has 38.8 km (24.1 mi) of underground sections, 6.8 km (4.2 mi) of mountain base tunneling and 14.7 km (9.1 mi) on viaducts. The line has a total of 20 stations, of which 16 are underground and 4 are elevated.

The eastern section of Line 21 opened on December 28, 2018 and the western section opened on December 20, 2019.

Since October 2, 2024, the section from Tianhe Park to Yuancun was removed from Line 21, and once renovation is complete, will transfer to Line 11. Cross Platform transfer will be provided at Tianhe Park station since December 28, 2024.