diff --git a/org/Makefile b/org/Makefile
index 65c66fe..e4c76c1 100644
--- a/org/Makefile
+++ b/org/Makefile
@@ -1,7 +1,7 @@
 EMACS=emacs
 ORG_CONFIG_FILE=publish_config.el
 EMACS_OPTS=--batch --eval "(load-file \"$(ORG_CONFIG_FILE)\")" -f myweb-publish
-TARGET=ls ../*.html* | grep -v "index.html"
+TARGET=ls ../*.html* | grep -v "index\|xmr.html"
 
 all: html
 
@@ -11,7 +11,6 @@ html:
 	@echo "DONE"
 
 clean:
-	rm ./../org_html/*.html
 	rm ~/.org-timestamps/org-pages.cache
-	$(TARGET) | xargs -I {} echo {}
-	rm ./../*.xml*
+	$(TARGET) | xargs -I {} rm {}
+	rm ../feed.xml*
diff --git a/org/cheatsheet.org b/org/cheatsheet.org
index b25b589..beefd0b 100644
--- a/org/cheatsheet.org
+++ b/org/cheatsheet.org
@@ -45,7 +45,7 @@
 
 
 * EMACS
-** org-mode
+** org
 | key         | usage                         |
 |-------------+-------------------------------|
 | C-c \vbar   | 创建表格                      |
@@ -54,6 +54,8 @@
 | C-c C-l     | 编辑链接                      |
 | C-c C-,     | org-insert-structure-template |
 
+*Bold* /italic/ _underline_ +strikethrough+ ~code~ =verbatim=
+
 ** normal
 | key     | usage               |
 |---------+---------------------|
diff --git a/org/gentoo_llvm_targets.org b/org/gentoo_llvm_targets.org
index 4dc7f4a..f9c9387 100644
--- a/org/gentoo_llvm_targets.org
+++ b/org/gentoo_llvm_targets.org
@@ -2,10 +2,8 @@
 #+DATE: <2022-10-29 六>
 #+OPTIONS: toc:nil
 
-Recently, I would like to test switching from =gcc= to =clang= on my Gentoo VM.
-Because if so, I can install =Rust= and =Zig= from source
-without worrying about adding the HUGE =clang= dependency that won't be used by other packages.
-Later I will remove =gcc= :)
+Recently, I would like to test switching from =gcc= to [[https://wiki.gentoo.org/wiki/Clang][clang]] on my Gentoo VM.
++warning: you will be crazy to have too many packages can't be build with clang+
 
 * problem
 First I want to make [[https://llvm.org][LLVM]] not targeting too many platform, but changing =LLVM_TARGETS= don't work
@@ -40,5 +38,3 @@ I excluded all targets exept for X86, but still 3 left: AMDGPU, BPF, NVPTX
   (-SPIRV) -Sparc -SystemZ -VE -WebAssembly -XCore" 241 KiB
 #+END_SRC
 
-in the end, [[https://wiki.gentoo.org/wiki/Gentoo_Cheat_Sheet][Gentoo cheatsheet]] and [[https://wiki.gentoo.org/wiki/Clang][Gentoo Wiki: Clang]] could be useful.
-
diff --git a/org/internet_collections.org b/org/internet_collections.org
index 6363998..c397601 100644
--- a/org/internet_collections.org
+++ b/org/internet_collections.org
@@ -230,11 +230,8 @@ plan9
 *** [[https://youtu.be/nfF91Z6fqGk][CMD 登录B站]]
 *** [[https://youtu.be/l0AmlU-4IRM][Rust aes加密(legacy)]]
 *** [[https://youtu.be/hmMtQe_mYr0][tsoding helloworld in c]]
-*** [[https://www.youtube.com/playlist?list=PLSiFUSQSRYAOFwfP-aMzXJlWKVyIuWfPU][stack-based virtual machine(6 episode)]] and [[https://youtu.be/cfPDeso3XwI][register-based(13 episode)]]
 *** [[https://www.youtube.com/playlist?list=PLpM-Dvs8t0VY73ytTCQqgvgCWttV3m8LM][tsoding virtual machine in C]] , [[https://dongdigua.github.io/tsoding_bm][some notes]]
 *** [[https://youtu.be/Fq9chEBQMFE][what if I try to malloc too much memory]]
-*** [[https://youtu.be/qF7dkrce-mQ][fireship bitcoin]]
-大概是我见过最好的讲区块链的视频了, 除了...JS 啊啊啊
 *** [[https://youtu.be/zJ-8DZhzBEE][what your favourite pl says about you]]
 *** [[https://youtu.be/ziXgdkTfmPU][tsoding irc client in ocaml]]
 0:50 List.fold_left faster than fold_right, but haskell is opposite
@@ -250,6 +247,9 @@ plan9
 *** [[https://youtu.be/UNkHditYGls][I coded a fractal on an Apple II+]]
 *** [[https://youtu.be/p8u_k2LIZyo][Fast Inverse Square Root — A Quake III Algorithm]]
 =0x5f3759df=
+*** [[https://youtu.be/67FmRyv8jTM][tsoding: Parsing Java Bytecode with Python]]
+0:05 look how TINY Java code is
+**** [[https://youtu.be/anOidUQcv1w][tsoding: I made JVM in Python just to run "Hello, World"]]
 
 ** Cyber Security
 *** [[https://youtu.be/x_R1DeZxGc0][Discover Vulnerabilities in Intel CPUs!]]
@@ -291,7 +291,7 @@ I agree
 **** [[https://youtu.be/2CnAzLB0OjU][DT: As The Web Grows Bigger, It Seems Smaller]]
 *** [[https://youtu.be/Rsxao9ptdmI][Beating 5 Scam Arcade Games with Science]]
 街机科学家～
-*** TODO [[https://youtube.com/playlist?list=PLgE-9Sxs2IBVgJkY-1ZMj0tIFxsJ-vOkv][BBS The Documentary(8)]]
+*** [[https://youtube.com/playlist?list=PLgE-9Sxs2IBVgJkY-1ZMj0tIFxsJ-vOkv][BBS The Documentary(8)]]
 
 * r
 ** [[https://www.reddit.com/r/unixporn/][unixporn]]
diff --git a/org/publish_config.el b/org/publish_config.el
index 13dd5f7..0ac1eb1 100644
--- a/org/publish_config.el
+++ b/org/publish_config.el
@@ -42,7 +42,7 @@
          ;; https://github.com/rgb-24bit/org-html-theme-list org-joshua
          :html-head "<link rel='stylesheet' type='text/css' href='css/main.css' />"
          :html-link-home "https://dongdigua.github.io"
-         :html-link-up "./../"
+         :html-link-up "./../posts"
          )))
 
 ;; from .emacs