Correct

更姓

/ gēng xìng / 
Strokes

Example

As a Verb

change one's surname; take/assume/adopt a different name

1
Tā
他
wǔ
五
suì
岁
shí
时
gēng
更
xìng
姓
  
,
suí
随
mǔ
母
xìng
姓
  
。

His surname was changed to his mother's when he was five years old.