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Jyutping wan4 wan4 zi2 si6
Pinyin yún yún zǎi shì

Definitions (Wiktionary)
  1. adv, Zhangzhou-Hokkien
    slowly
    (syn.) 聊聊仔, 定定, 勻勻仔, 沓沓仔, 慢慢仔, 宽宽仔, 慢慢, 寬寬仔, 匀匀仔