@yinsyuedu - I'm not sure what a Kindle Periodical is, but off the top of my head I would try this in Word 2007/10/13. Format the Titles as Headings - eg ctrl/alt/1 will set a paragraph as Heading 1. Save as DOCX
Then in calibre convert the DOCX to AZW3 using default conversions settings, and have looksee at it on your Kindle.
BR
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