Correct

建都

/ jiàndū / 
Strokes

Definition

to establish a capital

Example

As a Verb

found/establish a capital; make (a place) the capital

1
Liù
六
gè
个
cháodài
朝代
zài
在
nánjīng
南京
jiàn
建
guò
过
dōu
都
  
。

Six dynasties made their capitals in Nanjing.

2
Jiàndū
建都
chángān
长安

make Chang'an the capital; set the capital in Chang'an