Improve zh-CN Localization Quality (how section)

[susan4syw]

Context

This PR improves the quality of the Chinese (zh-CN) localization, focusing on the zh-CN > how section. My partner and I reviewed and corrected machine translations to improve clarity and consistency.

Key goals:

• Review machine translations for accuracy and natural wording
• Keep phrasing consistent across the tutorial and documentation
• Make sure references to UI labels match what users actually see
• Keep terminology consistent with the English locale
• Use appropriate academic/technical terminology in Chinese

Related issues

• Related to Chinese locale is poor quality #876
• Closes #

Verification

My partner and I are both fluent in Chinese. We reviewed the translations together and double-checked key terminology and UI label references.

Checklist

• Revise zh-CN > how
• Revise zh-CN-tutorial.json
• Revise zh-CN.json