Interpretation of interests: giving benefits to people; To: to. Only verbally promised to give benefits to others; But the actual benefits are not available to others. The language "Book of Rites" said: "Words are not true; Complain about the disaster and its body. " Pronunciation; It can't be pronounced "IR". Distinguish between form and benefit; Can't write "Hui". Usage is generally used as a predicate. Example: to help others, you must act quickly; Don't ~ Example: Hejian Feng Yishu, proficient in writing, has been expanding the capital for more than ten years. Every time I meet an opportunity, I accomplish nothing. Pray for others. ◎ Qing Ji Yun's Notes on Yuewei Caotang Volume III Grammar: Complex Sentences; As predicate and complement; derogatory sense