A Japanese martial art of unarmed combat using the hands and feet; originally derived from Chinese martial arts via the Ryukyu Islands.

Literally "like entering a mountain of treasures and returning with empty hands"; describes failing to gain anything from a great opportunity or a sure-fire venture.

(colloquial) to achieve huge gains or acquire assets without investing any of one's own money or effort; to profit through deceptive or clever schemes

To return from a trip or an endeavor with nothing gained; to fail to win or obtain anything.