1. "The door is cold and those who come need to be sincere" is interpreted from an emotional perspective: "My heart is cold and deep, and those who want to break into my heart must be sincere."
2. "Sincerity" is the central idea of ??the Confucian way of being a human being. We should base our lives on honesty and integrity. Zhu Xi, an acting scholar of the Song Dynasty, believed: "Sincerity means truth without falsehood.