重型
zhòng xíng · HSK 7
heavy
🏗️🚛 重 (heavy) + 型 (type/model) = heavy-type, i.e. heavy-duty
重 — person 人 + east 東 (phonetic)
Originally depicted a person carrying a heavy bundle on their back, suggesting weight and burden. The 東-like element served as a phonetic component. Over time the character split into two readings: zhòng meaning 'heavy' and chóng meaning 'repeat/again'.
型 — earth 土 + 刑 (xíng, phonetic)
型 is a semantic-phonetic compound. The 土 (earth) component points to its original meaning: a clay or earthen mold used for casting. The right side 刑 supplies the sound. From 'casting mold' it broadened to mean 'model, type, pattern' in modern usage.