diff --git a/Build/build-chn-cidr.ts b/Build/build-chn-cidr.ts
index 22b592ec..834abe13 100644
--- a/Build/build-chn-cidr.ts
+++ b/Build/build-chn-cidr.ts
@@ -7,10 +7,13 @@ import { task } from './trace';
 import { exclude } from 'fast-cidr-tools';
 import { createMemoizedPromise } from './lib/memo-promise';
 import { CN_CIDR_NOT_INCLUDED_IN_CHNROUTE, NON_CN_CIDR_INCLUDED_IN_CHNROUTE } from './constants/cidr';
+import { appendArrayInPlace } from './lib/append-array-in-place';
 
 export const getChnCidrPromise = createMemoizedPromise(async () => {
   const cidr = await processLineFromReadline(await fetchRemoteTextByLine('https://raw.githubusercontent.com/misakaio/chnroutes2/master/chnroutes.txt'));
-  return exclude([...cidr, ...CN_CIDR_NOT_INCLUDED_IN_CHNROUTE], NON_CN_CIDR_INCLUDED_IN_CHNROUTE, true);
+
+  appendArrayInPlace(cidr, CN_CIDR_NOT_INCLUDED_IN_CHNROUTE);
+  return exclude(cidr, NON_CN_CIDR_INCLUDED_IN_CHNROUTE, true);
 });
 
 export const buildChnCidr = task(import.meta.main, import.meta.path)(async (span) => {