diff --git a/README.org b/README.org
index 0beed5d..e8a42e7 100644
--- a/README.org
+++ b/README.org
@@ -57,7 +57,7 @@
 
    - REF: the [[https://community.rstudio.com/t/why-not-r-via-conda/9438][document]] helps me a lot.
 
-** Use the package _import_ by Rstudio as a module system in R.
+** Use the package "_import_" by Rstudio as a module system in R.
 A module system is to help us to control our namespace. It helps us to
 name the variables easilily without mixing them from other
 libariries. More importantly, it makes the code much easier to
@@ -122,11 +122,6 @@ other chapters when necessary.
 - [[https://github.com/r-lib/withr/][withr]]
   - Allow us to temporarily change the global states.
   
-- [[https://github.com/klmr/box][box]] is is a module system in R, which is just like the one in
-  Python. Previously it's named as klmr/modules, and is not updated
-  now. The author upgrade the framework, and now box is is the one we
-  need.
-
 ** Materials
 - [[https://adv-r.hadley.nz][Advanced R]] by Hadley Wickham.
   - It's free and updated online. This book is written very well, and