all brawn and no brains

有勇无谋

(yǒuyǒnɡ wúmóu)

A: Look at the fighters on this show, they only know how charge forward. In the end they're going to lose.

看看电视剧里面这些武士,只懂得硬碰硬,最后只会一败涂地。

(kànkàn diànshìjù lǐmiàn zhèxiē wǔshì,zhǐ dǒnɡde yìnɡpènɡyìnɡ, zuìhòu zhǐhuì yībài túdì.)

B: I know. They really are all brawn and no brains.

是啊,他们真是有勇无谋。

(shìa,tāmen zhēnshì yǒuyǒnɡ wúmóu.)