上五寸下五寸 [－－－－－－]

Jyutping soeng5 ng5 cyun3 haa6 ng5 cyun3
Pinyin shàng wǔ cùn xià wǔ cùn

Definitions (Wiktionary)
  1. noun, Cantonese
    midpoint of the tibia

上五寸下五寸 [－－－－－－]

Jyutping soeng6 ng5 cyun3 haa6 ng5 cyun3
Pinyin shàng wǔ cùn xià wǔ cùn

Definitions (粵典–words.hk)
  1. 名詞
    膝頭​對​落​五寸​到​腳​掌​對​上​五寸​嘅​範​圍​；​一般​認為​呢​個​地方​好​脆弱​，​踢​落​去​會​好​痛
    mid-calf; the area between 5 inches below the knee to 5 inches above the foot; believed to be a weak spot and will really hurt if kicked