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Jyutping zi6 jin4 ging1 zai3
Pinyin zì rán jīng jì

Definitions (CC-CEDICT)
  1. natural economy (exchange of goods by bartering not involving money)
Definitions (Wiktionary)
  1. noun
    natural economy
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)