diff --git a/build/rpm/build_spec.sh b/build/rpm/build_spec.sh
index 7eb32b0..4d52de8 100755
--- a/build/rpm/build_spec.sh
+++ b/build/rpm/build_spec.sh
@@ -41,14 +41,10 @@ for f in *.sh; do
 done
 cd ..
 echo 'install -m 644 VERSION $RPM_BUILD_ROOT/usr/share/zjunet/VERSION' >> zjunet.spec
-echo 'install -m 644 qsc.public.key $RPM_BUILD_ROOT/usr/share/zjunet/qsc.public.key' >> zjunet.spec
-echo 'install -m 644 qsc.repo $RPM_BUILD_ROOT/usr/share/zjunet/qsc.repo' >> zjunet.spec
 echo "" >> zjunet.spec
 echo "%files" >> zjunet.spec
 echo "%defattr(-,root,root)" >> zjunet.spec
 echo "/usr/bin/zjunet" >> zjunet.spec
-echo "/usr/share/zjunet/qsc.public.key" >> zjunet.spec
-echo "/usr/share/zjunet/qsc.repo" >> zjunet.spec
 echo "/usr/share/zjunet/zjunet-postinst" >> zjunet.spec
 echo "/usr/share/zjunet/VERSION" >> zjunet.spec
 cd lib
diff --git a/miscellaneous/qsc.list b/miscellaneous/qsc.list
deleted file mode 100644
index 154e15c..0000000
--- a/miscellaneous/qsc.list
+++ /dev/null
@@ -1,3 +0,0 @@
-
-deb http://dl.zjuqsc.com/linux/debian stable main
-
diff --git a/miscellaneous/qsc.public.key b/miscellaneous/qsc.public.key
deleted file mode 100644
index 622e1d0..0000000
--- a/miscellaneous/qsc.public.key
+++ /dev/null
@@ -1,30 +0,0 @@
------BEGIN PGP PUBLIC KEY BLOCK-----
-Version: GnuPG v1.4.12 (GNU/Linux)
-
-mQENBFTWIjMBCADxVTzmEp6T7pT5MiOwcyNQ/AxWf2xsA2ZDugrNrS3GoWRVyowv
-phmgbq7J394cuL/Yw3f03Mw5mmDDEmC6j+FBf63hlLNj/UOeJdCibOSWJd89gbDY
-ETUDtWAU+6xlG8gcoi/Jedy+yXwjcD8P8r3xU9pGt6sbJbSUJBzX9ghtEPdygUnn
-rFG7jHXcbgnCr/mXcCMD59Y0grQvSW6N9B2vyGSrvYU4wlsBAtfJ93PJsd1bG5Oh
-NS0XOCr4HHZO8hXlSdY2wyce3E2Pk+i/tbRJXoaezsRnHnFO0vAIvyouuIZnu5fr
-iLIAWlRrErN09UKX4tlcmgWF1NRel3catpT/ABEBAAG0J1FpdSBTaGkgQ2hhbyAo
-Q09NUDY2KSA8dGVjaEB6anVxc2MuY29tPokBOAQTAQIAIgUCVNYiMwIbAwYLCQgH
-AwIGFQgCCQoLBBYCAwECHgECF4AACgkQ0qefnxdfAgJfKQgAmtjOp88qBHuguQrb
-oefHGqs9C/GyJR8uzmlyf2Csln8C1rWJvSuS6J+CDY0jppeHjVJJsNki1RFfIb6p
-8kFADGHwNMO3xdsMOxUyO9982pt1D0IdnQtn3lg7aWXwWTkdbXeDhOi2eh7BWINd
-TkYFP6lSanVi2yQEePhAdUv/sNQ2afKmjY+07CRNyCKgBXPPuh2VdWYjKk17Lx2G
-Jq/Jnw140hE9ESosrqefSnJRlZxjy4h4sE5sl8VPhkYxw91Ol9P9IyfIUx1uPzGc
-eZAj/nnGNaBjjDzMlsOKVkLptEX4XYmiKVhVby1NkWbO/Makj746lC9TCjVAUgrA
-Pw4mJLkBDQRU1iIzAQgApukqhnyFmOMvWTSin7NUf3nwNukkKwmABj9b54x+4XcO
-c6A/9P4GygpqEGyMN6uduxM7PoUA2sPJG2kh2+uZeEoavAGyqfPp2uCFy1SEqopA
-NyhWJz6bNkTUuHF2V1Wwfm/YIVIvaNKFz1be0t0YZkESuE1KvvEcoUa7BmhHiy7B
-MiWrom6lFSSprI9t46zeNm9aSWNYAgEtAqgDLkmdmrKUymsIQWTJiSbJV6A3B2FP
-+euiOozZmLq8bZDI1UgW1aieq0XTpz5ka/uklBKZKe98XmZUTeYmq/Y2xAm9CgJz
-OXEHgbOJ8bc1r5VnVg2xT2hVA6adw8SI/14tYpntZQARAQABiQEfBBgBAgAJBQJU
-1iIzAhsMAAoJENKnn58XXwICrWoH/RMEWSnAIYOp8oF4O5N3DT489iTkjZLezdAN
-ASZwU/AmkFf7HwWiwJ9l9aBVJkbjtmKDNTlBB/dfSyWTZZPER28+d5tAEQp5kr1b
-n5fm8+A+KHtIN2XclNMS84OpxWJ0RK2bwdc9PAe6iJwKXFTwLIVxUHYdUwLHRluH
-mpSnQGGoBpEh2711IhBofy/0JXikAi0KqeKia0EHZH4ZrWq5nIygCnVeVfa+SaHw
-ltjO2awKG1nJB+xjPTRa+lu84qmczrOQ6rKkILUXdHTBaS10rHQbHCa9x8GSIFVs
-HExKX5SwV9uwcmHN6WVW8zISWZT9qVcvLOcf1cYRWxAHzxKCy0Y=
-=dTq1
------END PGP PUBLIC KEY BLOCK-----
diff --git a/miscellaneous/qsc.repo b/miscellaneous/qsc.repo
deleted file mode 100644
index 92489fc..0000000
--- a/miscellaneous/qsc.repo
+++ /dev/null
@@ -1,9 +0,0 @@
-[qsc]
-name=Several things for Qiu Shi Chao Website
-baseurl=http://dl.zjuqsc.com/linux/yum
-failovermethod=priority
-enabled=1
-gpgcheck=1
-gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-QSC-COMP66
-metadata_expire=30m
-
diff --git a/miscellaneous/zjunet-postinst b/miscellaneous/zjunet-postinst
index a1bb785..dc16d11 100755
--- a/miscellaneous/zjunet-postinst
+++ b/miscellaneous/zjunet-postinst
@@ -1,20 +1,5 @@
 #!/bin/sh
 
-command -v apt-key 2>&1 >/dev/null && [ -d /etc/apt ] && {
-	cp /usr/share/zjunet/qsc.list /etc/apt/sources.list.d/qsc.list
-	chmod 644 /etc/apt/sources.list.d/qsc.list
-	apt-key add /usr/share/zjunet/qsc.public.key 2>&1 >/dev/null || true
-	echo "Added apt list."
-}
-
-command -v rpm 2>&1 >/dev/null && [ -d /etc/pki/rpm-gpg ] && [ -d /etc/yum.repos.d ] && {
-	cp /usr/share/zjunet/qsc.public.key /etc/pki/rpm-gpg/RPM-GPG-KEY-QSC-COMP66
-	chmod 644 /etc/pki/rpm-gpg/RPM-GPG-KEY-QSC-COMP66
-	rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-QSC-COMP66 2>&1 >/dev/null || true
-	cp /usr/share/zjunet/qsc.repo /etc/yum.repos.d/qsc.repo || true
-	echo "Added yum repo."
-}
-
 cat <<BANNER
 ----------------------------------------------------------------------