Pitching distance
It is a Chinese idiom, Pinyin is t ó ush í B á J ù, which means martial arts practice in ancient army. It comes from the biography of Gan Yanshou in Hanshu.
Idiom explanation
It's the same as "throwing stones at a distance".
The origin of Idioms
Ban Gu's biography of Gan Yanshou in the book of Han in the Eastern Han Dynasty: "the distance between the two is equal."
Idiom usage
Used as an object or attribute; used in writing
Pitching distance
the few are no match for the many - sì bù niù liù
force young girls of good families to prostitute themselves - bī liáng wéi chāng
make promises easily but seldom keep them - qīng nuò guǎ xìn