Correct
建功
/ jiàn gōng /
Strokes
Example
As a Verb
do a deed of merit; perform meritorious service
1
Zài
再
jiàn
建
xīn
新
gōng
功
make new contributions
2
Jiàngōnglìyè
建功立业
make great contributions and accomplish great tasks; render meritorious service and make a distinguished career