[绿]

Jyutping luk6 pei4 ce1
Pinyin lǜ pí chē

Definitions (Wiktionary)
  1. noun, Mainland-China
    slow, old-fashioned train that is usually unairconditioned

綠皮車 [绿-车]

Jyutping
Pinyin lǜ pí chē

Definitions (CC-CEDICT)
  1. green train (slow, noisy, unairconditioned train with forest green livery and yellow trim that ran on the Chinese railway system from the 1950s, phased out in the early 21st century)