diff --git a/assets/section_3.4_1686989774901_0.edn b/assets/section_3.4_1686989774901_0.edn
index 4d5fa15..4670b71 100644
--- a/assets/section_3.4_1686989774901_0.edn
+++ b/assets/section_3.4_1686989774901_0.edn
@@ -10,4 +10,4 @@
                           :page 2},
                :content {:text "[:span]", :image 1686990076404},
                :properties {:color "yellow"}}],
- :extra {:page 2}}
+ :extra {:page 5}}
diff --git a/pages/hls__section_3.4_1686989774901_0.md b/pages/hls__section_3.4_1686989774901_0.md
index 294ae50..4843bef 100644
--- a/pages/hls__section_3.4_1686989774901_0.md
+++ b/pages/hls__section_3.4_1686989774901_0.md
@@ -1,2 +1,10 @@
 file:: [section_3.4_1686989774901_0.pdf](../assets/section_3.4_1686989774901_0.pdf)
 file-path:: ../assets/section_3.4_1686989774901_0.pdf
+
+- [:span]
+  ls-type:: annotation
+  hl-page:: 2
+  hl-color:: yellow
+  id:: 648d6cfd-9414-489e-ae6f-0c37a35c6c28
+  hl-type:: area
+  hl-stamp:: 1686990076404
\ No newline at end of file
diff --git a/pages/总复习2023t1.md b/pages/总复习2023t1.md
index dd452de..fed649e 100644
--- a/pages/总复习2023t1.md
+++ b/pages/总复习2023t1.md
@@ -2934,7 +2934,10 @@
 							- ((648d6bc0-6d8b-42a8-bb45-1f700e4855cf))
 							-
 					- One function of two random variables ![section 3.4.pdf](../assets/section_3.4_1686989774901_0.pdf)
-						-
+						- Definition:
+							- ((648d6cfd-9414-489e-ae6f-0c37a35c6c28))
+						- Discrete case
+							-
 			- LATER 学积分
 			  :LOGBOOK:
 			  CLOCK: [2023-06-03 Sat 17:05:07]--[2023-06-03 Sat 17:05:08] =>  00:00:01