diff --git a/assets/section_2.4_1686920705980_0.edn b/assets/section_2.4_1686920705980_0.edn
index c9ae4b5..445120b 100644
--- a/assets/section_2.4_1686920705980_0.edn
+++ b/assets/section_2.4_1686920705980_0.edn
@@ -152,4 +152,4 @@
                           :page 27},
                :content {:text "[:span]", :image 1686922716232},
                :properties {:color "yellow"}}],
- :extra {:page 29}}
+ :extra {:page 28}}
diff --git a/pages/总复习2023t1.md b/pages/总复习2023t1.md
index 2b03783..9e5b13f 100644
--- a/pages/总复习2023t1.md
+++ b/pages/总复习2023t1.md
@@ -2674,6 +2674,7 @@
 						  $$P (A ∪ B) = P (A) + P (B) − P (AB)$$
 						- ![image.png](../assets/image_1686901846112_0.png)
 					- The ((648c1a97-e67b-471b-b07f-ae24970d60f6)) of Conditional Probability ![section 1.5.pdf](../assets/section_1.5_1686903326304_0.pdf)
+					  collapsed:: true
 						- ![Screenshot from 2023-06-16 16-17-56.png](../assets/Screenshot_from_2023-06-16_16-17-56_1686903487884_0.png)
 					- ((648c1afb-77a7-4f91-b6e9-20351b320254))
 					- ((648c1b5f-f72c-495e-8c8a-b184c8682d74))
@@ -2686,7 +2687,6 @@
 						- ((648c206e-8ce7-4a74-9ba5-4991d761909f))
 					- ((648c27ed-e09d-4f1a-8100-7ae2dfff1c8e))
 						- ((648c27f9-f944-4bf8-9e44-cb3e9048d286))
-					-
 				- LATER Ch2 Random Variable
 				  :LOGBOOK:
 				  CLOCK: [2023-06-16 Fri 17:15:12]--[2023-06-16 Fri 21:34:48] =>  04:19:36
@@ -2785,6 +2785,7 @@
 								-
 					- ((648c5e0c-b0b1-4129-b172-3ff95ff4a41c)) and ((648c5e26-8a90-4db2-919f-356a164e5a2b))  ![section 2.4.pdf](../assets/section_2.4_1686920705980_0.pdf)
 						- Binomial Distribution
+						  collapsed:: true
 							- Definition: #flashcard
 							  id:: 648c5ef0-fd5e-4f17-9e2d-fde0c67e53c6
 								- ((648c5fc2-c838-473b-9b29-f238ae3a96ca))
@@ -2809,6 +2810,7 @@
 							- Properties:
 								- Variance, mean :-> ((648c65dd-356b-4209-85ae-e881033fcea8))
 								  id:: 648c65d1-7592-43f7-a12c-d96d9e76a492
+								- LATER Examples
 			- LATER 学积分
 			  :LOGBOOK:
 			  CLOCK: [2023-06-03 Sat 17:05:07]--[2023-06-03 Sat 17:05:08] =>  00:00:01