Correct

老兄

/ lǎoxiōng / 
Strokes

Definition

elder brother (often used self-referentially)/(form of address between male friends) old chap/buddy

Example

As a Noun

brother; man; old chap/fellow [a form of address among friends]

1
Nǐ
你
lǎoxiōng
老兄
zhēn
真
háng
行
  
!

Bravo, old chap! / Man, you're great!