diff --git a/README_ch.md b/README_ch.md
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--- a/README_ch.md
+++ b/README_ch.md
@@ -249,7 +249,6 @@ Feel free to [contribute](CONTRIBUTING.md).
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             Suspicious Domains Threat 由 <a href="https://isc.sans.edu/suspicious_domains.html" target="_blank">SANS ICS</a> 提供对恶意域名的跟踪，提供三个列表分为 <a href="https://isc.sans.edu/feeds/suspiciousdomains_High.txt" target="_blank">高</a>, <a href="https://isc.sans.edu/feeds/suspiciousdomains_Medium.txt" target="_blank">中</a> or <a href="https://isc.sans.edu/feeds/suspiciousdomains_Low.txt" target="_blank">低</a> 三个层级，高级名单的错报低，低级名单的错报高。还有一个域名的 <a href="https://isc.sans.edu/feeds/suspiciousdomains_whitelist_approved.txt" target="_blank">白名单</a><br/>
             另外，也有黑名单 <a href="https://isc.sans.edu/block.txt" target="_blank">IP blocklist</a> 由 <a href="https://dshield.org">DShield</a> 提供
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