纯真 (chún zhēn) is an adjective meaning 'innocent', 'childlike', or 'sincere'—emphasizing purity of heart and absence of guile or artificiality. The character 纯 (chún) means 'pure', 'unmixed', or 'unadulterated', while 真 (zhēn) means 'true', 'genuine', or 'real'. Together, they form a compound that conveys authenticity rooted in simplicity and moral clarity—not just naivety, but heartfelt honesty and uncorrupted openness. It often describes qualities associated with children, artists, idealists, or moments of emotional authenticity.

This word carries warm, positive connotations and appears frequently in literature, film, and everyday praise (e.g., describing someone’s smile, voice, or outlook). It’s more literary and tender than the neutral term 真实 (zhēnshí, 'truthful') or the colloquial 真诚 (zhēnchéng, 'sincere'), and it rarely modifies abstract nouns like 'policy' or 'data'—it’s almost always tied to people, expressions, emotions, or memories.