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Jyutping pin1 dung1 jyu5
Pinyin piān dōng yǔ

Definitions (Wiktionary)
  1. noun, Sichuanese
    thundershower (usually during the summer)
    (syn.) 天雷猛雨 stronger, 雷暴雨, 方時雨, 雷雨, 忽雷雨, 雷陣雨, 天雷雨, 西北, 偏東雨, 西北雨, 晡時雨