《史记·十二本纪·高祖本纪》
楚、汉长期相持，胜负未决，年青力壮的苦于当兵打仗，年老体弱的疲于转运粮食。
楚汉久相持未决，丁壮苦军旅，老弱罢转饟。
Chu and Han had been in a stalemate for a long time, and the outcome was still undecided. The young and strong were exhausted after fighting, and the old and weak were exhausted by transporting food.