Perfect 🙌 Here’s your 1-page Sitemap Maintenance Checklist for KOHTCM:

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🗂 Sitemap Maintenance Checklist

🔹 1. When You Add a New Microsite (e.g. /cheng-si-tang/)

• ✅ Create a new sitemap file (sitemap_chengsitang.xml).
• ✅ Add all important URLs for that microsite inside it.
• ✅ Update sitemap_index.xml to include the new sitemap.
• ✅ Upload both files (sitemap_chengsitang.xml + updated sitemap_index.xml) to your server root.
• ✅ Check https://kohtcm.com/sitemap_index.xml in browser to confirm it lists the new sitemap.

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🔹 2. When You Add New Pages to an Existing Microsite

• ✅ Open the correct sitemap file (e.g. sitemap_clinic.xml).
• ✅ Add the new <url> entry with <loc>, <lastmod>, <changefreq>, <priority>.
• ✅ Re-upload only that sitemap file.
• ✅ No need to change sitemap_index.xml.

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🔹 3. After Uploading

• ✅ Test in browser: file should display as XML, not HTML.
• ✅ Ensure the URL matches your Search Console property (https://kohtcm.com/).
• ✅ Confirm server sends correct header: Content-Type: application/xml.

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🔹 4. Google & Bing

• ✅ In Google Search Console → only submit https://kohtcm.com/sitemap_index.xml (not each sub-sitemap).
• ✅ In Bing Webmaster Tools → also submit only the index.
• ✅ Google & Bing will auto-discover all sub-sitemaps.

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🔹 5. Robots.txt (Optional but Helpful)

Add this line (if not already there):

Sitemap: https://kohtcm.com/sitemap_index.xml

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✅ That’s it!
Following this checklist, you’ll never have sitemap problems again — just keep the index clean and update the right sub-sitemap when new content goes live.

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Do you also want me to make you a ready-to-use XML template (blank sitemap structure) so you can copy-paste whenever you add a new microsite?