Criteria for high-quality answers: 1. The answer is correct, direct, comprehensive, and without redundancy; 2. The answer content should be comprehensive and the language should be as concise and easy to understand as possible; 3. There should be no grammatical errors, typos, and punctuation errors.

; 4. Originality (no copying, no plagiarism); 5. Neat layout and clear hierarchy; 6. No content involving "pornography", "gambling", "drug" or "anti".