What are the words to describe the back?

I. Heavy [ chén zhongr ]

Explanation: 〈form〉weighty; deep.

Citation: 茅盾《子夜》九："He thought sullenly and felt his heart grow heavy."

II. wide and thick [ kuān hòu ]

Explanation: wide and thick: ~'s chest.

Citation: Liu Qing 《Bronze Walls, Iron Walls》Chapter 11："He stroked Shi De Fu's broad and sturdy shoulders."

Three, single thin [ dān bó ]

Explanation: (body) thin and weak: she has been sickly since childhood, her body ~.

Citation: wu group light color "mountain torrent" twelve: "His single thin body bent stiffly."

Four, stiff [ jiāng yìng ]

Interpretation: (limb) inactivity: his two legs ~ up.

Citation: Shatin The Route: "The boss's tongue seemed to stiffen, but he then turned to the teahouse, which he had left outside, and confessed."

5. tǐng bá (挺拔 [ tǐng bá ]

Interpretation: strong and powerful; robust: the power of the brush ~.

Citation: "Cultural Relics World" No. 1, 1982: "The Shenzejun Stele" is slightly less grim and upright than the "Xuanxieta Stele", but the penmanship is more refined and robust than the "Xuanxieta Stele"."