Correct

国号

/ guóhào / 
Strokes

Definition

official name of a nation (includes dynastic names of China: 汉[hàn], 唐[táng] etc)

Example

As a Noun

name of a reigning dynasty; title of a reign/dynasty

1
Gǎi
改
guóhào
国号
wéi
为
zhōu
周

change the name of the dynasty into Zhou