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Jyutping zing1 sing4
Pinyin jīng chéng

Definitions (CC-CEDICT)
  1. sincerity
  2. absolute good faith
Definitions (Wiktionary)
  1. noun, literary
    absolute sincerity; good faith
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)