diff --git a/.source_state b/.source_state
index d2a74c4..2052d0e 100644
--- a/.source_state
+++ b/.source_state
@@ -1 +1 @@
-8a3f81986b4932245c23eee5be50040b
+74be62d9573cdf17800a8909f5682754
diff --git a/SD/1_R语言介绍/index.qmd b/SD/1_R语言介绍/index.qmd
index c1de778..bc008d5 100644
--- a/SD/1_R语言介绍/index.qmd
+++ b/SD/1_R语言介绍/index.qmd
@@ -218,4 +218,4 @@ devtools::install_github("kjhealy/socviz")
 ## 欢迎讨论！{.center}
 
 
-`r rmdify::slideend(wechat = FALSE, type = "public", tel = FALSE, thislink = "../")`
+`r rmdify::slideend(wechat = FALSE, type = "public", tel = FALSE, thislink = "https://drc.drwater.net/course/public/RWEP/PUB/SD/")`
diff --git a/SD/1_datatransform/index.qmd b/SD/1_datatransform/index.qmd
index 1b36cf5..e970e8c 100644
--- a/SD/1_datatransform/index.qmd
+++ b/SD/1_datatransform/index.qmd
@@ -945,5 +945,5 @@ semi_join(df1, df2, by = "id")
 ## 欢迎讨论！{.center}
 
 
-`r rmdify::slideend(wechat = FALSE, type = "public", tel = FALSE, thislink = "https://drwater.rcees.ac.cn/course/public/RWEP/@PUB/SD/")`
+`r rmdify::slideend(wechat = FALSE, type = "public", tel = FALSE, thislink = "https://drc.drwater.net/course/public/RWEP/PUB/SD/")`
 
diff --git a/SD/2_R语言语法基础/index.qmd b/SD/2_R语言语法基础/index.qmd
index 0bd9d7e..31c1e89 100644
--- a/SD/2_R语言语法基础/index.qmd
+++ b/SD/2_R语言语法基础/index.qmd
@@ -792,4 +792,4 @@ names(Y) <- c("colA", "colB", "colC")
 ## 欢迎讨论！{.center}
 
 
-`r rmdify::slideend(wechat = FALSE, type = "public", tel = FALSE, thislink = "../")`
+`r rmdify::slideend(wechat = FALSE, type = "public", tel = FALSE, thislink = "https://drc.drwater.net/course/public/RWEP/PUB/SD/")`
diff --git a/SD/2_dataimport/index.qmd b/SD/2_dataimport/index.qmd
index 56d9905..0882b47 100644
--- a/SD/2_dataimport/index.qmd
+++ b/SD/2_dataimport/index.qmd
@@ -321,5 +321,4 @@ if (FALSE) {
 ## 欢迎讨论！{.center}
 
 
-`r rmdify::slideend(wechat = FALSE, type = "public", tel = FALSE, thislink = "../")`
-
+`r rmdify::slideend(wechat = FALSE, type = "public", tel = FALSE, thislink = "https://drc.drwater.net/course/public/RWEP/PUB/SD/")`
diff --git a/SD/9_课后作业8/第8次课后作业_模板.qmd b/SD/9_课后作业8/第8次课后作业_模板.qmd
index 5c5ca52..9164848 100644
--- a/SD/9_课后作业8/第8次课后作业_模板.qmd
+++ b/SD/9_课后作业8/第8次课后作业_模板.qmd
@@ -118,7 +118,7 @@ if (FALSE) {
   saveRDS(testdf, "./testdf.RDS")
 }
 
-if (!isRendering) {
+if (FALSE) {
 
 lang <- "cn"
 require(dwfun)
diff --git a/data/writexldemo.xlsx b/data/writexldemo.xlsx
index b3d1110..5683917 100644
Binary files a/data/writexldemo.xlsx and b/data/writexldemo.xlsx differ