Hěnduō zhōngyào yòng de shì zhíwù de kuàigēn, bǐrú màidōng.
Many Chinese medicines use a plant's tuberous root, dwarf lilyturf for one.
Tips
mistakes
A 块根 is a swollen root, a 块茎 a swollen stem, which is why a potato has 'eyes', buds on the stem. Sweet potato, cassava and dahlia store their food in root tubers instead.
