Gǔdài hú shì liáng liángshi de liángqì, shí dǒu wéi yì hú.
In ancient times the hu was a grain-measuring vessel: ten dou made one hu.
Tips
history
斛 is not used in modern measurement. It was a grain vessel and dry-volume unit equal to ten 斗 (changed to five in the late Southern Song); it now appears only in classical and historical texts.
register
Archaic and historical; modern volume is measured in 升 (litres), not 斛.