diff --git a/assets/section_2.4_1686920705980_0.edn b/assets/section_2.4_1686920705980_0.edn
index 491cfbf..c4d08f9 100644
--- a/assets/section_2.4_1686920705980_0.edn
+++ b/assets/section_2.4_1686920705980_0.edn
@@ -127,5 +127,29 @@
                           :rects (),
                           :page 23},
                :content {:text "[:span]", :image 1686922555953},
+               :properties {:color "yellow"}}
+              {:id #uuid "648c65ba-0f8f-4371-a52e-e78e8b3ae512",
+               :page 26,
+               :position {:bounding {:x1 36,
+                                     :y1 108.8330078125,
+                                     :x2 653,
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+                                     :height 507.96853333333326},
+                          :rects (),
+                          :page 26},
+               :content {:text "[:span]", :image 1686922681863},
+               :properties {:color "yellow"}}
+              {:id #uuid "648c65dd-356b-4209-85ae-e881033fcea8",
+               :page 27,
+               :position {:bounding {:x1 42,
+                                     :y1 97.9990234375,
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+                          :rects (),
+                          :page 27},
+               :content {:text "[:span]", :image 1686922716232},
                :properties {:color "yellow"}}],
  :extra {:page 26}}
diff --git a/assets/section_2.4_1686920705980_0/26_648c65ba-0f8f-4371-a52e-e78e8b3ae512_1686922681863.png b/assets/section_2.4_1686920705980_0/26_648c65ba-0f8f-4371-a52e-e78e8b3ae512_1686922681863.png
new file mode 100644
index 0000000..d0dd939
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diff --git a/assets/section_2.4_1686920705980_0/27_648c65dd-356b-4209-85ae-e881033fcea8_1686922716232.png b/assets/section_2.4_1686920705980_0/27_648c65dd-356b-4209-85ae-e881033fcea8_1686922716232.png
new file mode 100644
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diff --git a/pages/hls__section_2.4_1686920705980_0.md b/pages/hls__section_2.4_1686920705980_0.md
index 8ef776c..51fa32b 100644
--- a/pages/hls__section_2.4_1686920705980_0.md
+++ b/pages/hls__section_2.4_1686920705980_0.md
@@ -66,4 +66,18 @@ file-path:: ../assets/section_2.4_1686920705980_0.pdf
   hl-color:: yellow
   id:: 648c653d-ed40-4938-9124-cf4c2c296867
   hl-type:: area
-  hl-stamp:: 1686922555953
\ No newline at end of file
+  hl-stamp:: 1686922555953
+- [:span]
+  ls-type:: annotation
+  hl-page:: 26
+  hl-color:: yellow
+  id:: 648c65ba-0f8f-4371-a52e-e78e8b3ae512
+  hl-type:: area
+  hl-stamp:: 1686922681863
+- [:span]
+  ls-type:: annotation
+  hl-page:: 27
+  hl-color:: yellow
+  id:: 648c65dd-356b-4209-85ae-e881033fcea8
+  hl-type:: area
+  hl-stamp:: 1686922716232
\ No newline at end of file
diff --git a/pages/总复习2023t1.md b/pages/总复习2023t1.md
index aa494bd..4139c35 100644
--- a/pages/总复习2023t1.md
+++ b/pages/总复习2023t1.md
@@ -2777,8 +2777,8 @@
 								-
 					- ((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:
-							  collapsed:: true
 								- ((648c5fc2-c838-473b-9b29-f238ae3a96ca))
 								- ((648c5f9a-646f-4eea-9d03-597d8598f752))
 								- ((648c5fa8-25a4-47ba-a285-e9399f719543))
@@ -2793,6 +2793,11 @@
 								- ((648c63da-deea-42ab-8f72-f3219d4fecbc))
 						- Poisson distribution
 							- Definition: :-> ((648c653d-ed40-4938-9124-cf4c2c296867))
+							- Use cases:
+							  collapsed:: true
+								- ((648c65ba-0f8f-4371-a52e-e78e8b3ae512))
+							- Properties:
+								- Variance, mean
 			- LATER 学积分
 			  :LOGBOOK:
 			  CLOCK: [2023-06-03 Sat 17:05:07]--[2023-06-03 Sat 17:05:08] =>  00:00:01