一坦平洋 [－－－－]

Jyutping jat1 taan2 ping4 joeng4
Pinyin yī tǎn píng yáng

Definitions (Wiktionary)
  1. phrase, Xiang, idiomatic
    wide expanse of flat land; wide stretch of flat country
    (syn.) 一馬平川, 一马平川