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<!-- Two URLs, one per locale. <lastmod> is the only field that buys anything:
     Google has said publicly that it ignores <changefreq> and <priority>.
     Bump the date whenever a page's content actually changes.
     The xhtml:link alternates mirror the in-page hreflang set — reciprocal
     and self-referencing on both entries, the condition Google imposes
     before honouring hreflang at all. -->
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    <lastmod>2026-08-23</lastmod>
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    <xhtml:link rel="alternate" hreflang="zh-Hans" href="https://eddyzhang.me/zh" />
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    <loc>https://eddyzhang.me/zh</loc>
    <lastmod>2026-08-23</lastmod>
    <xhtml:link rel="alternate" hreflang="en" href="https://eddyzhang.me/" />
    <xhtml:link rel="alternate" hreflang="zh-Hans" href="https://eddyzhang.me/zh" />
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