What Yuhua "Brothers" writes is two is not the blood brother actually surpasses blood brother's different destiny.

余华《兄弟》写的是两个不是亲兄弟却胜似亲兄弟的不同命运。

youdao

Come, let's sell him to the Ishmaelites and not lay our hands on him; after all, he is our brother, our own flesh and blood.

我们不如将他卖给以实玛利人，不可下手害他，因为他是我们的兄弟，我们的骨肉。

youdao

And surely your blood of your lives will I require; at the hand of every beast will I require it, and at the hand of man; at the hand of every man's brother will I require the life of man.

流你们血，害你们命的，无论是兽，是人，我必讨他的罪，就是向各人的弟兄也是如此。

youdao

To hear Bill Koch describe it, at least in legal briefs, his battle versus his fraternal twin, David, and older brother Charles was just business though the blood relations, he admitted, made it more painful.

FORBES: Bad Blood: Meet Bill And Frederick, The Other Kochs