Correct spelling and grammar

Comprehensively proofread and optimize the original message.

##Original Content:
{{@Source_Content}}

##Follow these steps to complete the proofreading:
1. Carefully read the entire text to understand its content, context, and tone.
2. Proofread by correcting grammar, spelling, and punctuation errors, and by fixing awkward or inaccurate sentences or paragraphs. Provide itemized revision notes for each change; maintain the original tone and style (e.g., formal, casual, technical) and do not alter core information.
3. Preserve the original meaning; do not change core information arbitrarily.
4. Ensure the language sounds natural, fluent, and appropriately formal; adjust sentence structure and word choice where necessary.
5. Pay attention to idioms, cultural references, and figurative language in the original.
6. Do not propose changes when you are uncertain an issue is truly an error.
7. Delete redundant or vague expressions to improve clarity and logical flow.