diff --git a/assets/section_3.4_1686989774901_0.edn b/assets/section_3.4_1686989774901_0.edn
index a75fd5a..ae79be9 100644
--- a/assets/section_3.4_1686989774901_0.edn
+++ b/assets/section_3.4_1686989774901_0.edn
@@ -86,5 +86,29 @@
                           :rects (),
                           :page 16},
                :content {:text "[:span]", :image 1686991327483},
+               :properties {:color "yellow"}}
+              {:id #uuid "648d767e-8555-4232-8be8-ff27073ed790",
+               :page 17,
+               :position {:bounding {:x1 45,
+                                     :y1 79.0830078125,
+                                     :x2 687,
+                                     :y2 223.0830078125,
+                                     :width 725.67,
+                                     :height 544.252},
+                          :rects (),
+                          :page 17},
+               :content {:text "[:span]", :image 1686992510458},
+               :properties {:color "yellow"}}
+              {:id #uuid "648d7691-7c7f-435a-a441-0a4314fd9e60",
+               :page 20,
+               :position {:bounding {:x1 48,
+                                     :y1 66.0830078125,
+                                     :x2 709,
+                                     :y2 511.0830078125,
+                                     :width 725.67,
+                                     :height 544.252},
+                          :rects (),
+                          :page 20},
+               :content {:text "[:span]", :image 1686992529065},
                :properties {:color "yellow"}}],
- :extra {:page 20}}
+ :extra {:page 21}}
diff --git a/assets/section_3.4_1686989774901_0/17_648d767e-8555-4232-8be8-ff27073ed790_1686992510458.png b/assets/section_3.4_1686989774901_0/17_648d767e-8555-4232-8be8-ff27073ed790_1686992510458.png
new file mode 100644
index 0000000..0626e75
Binary files /dev/null and b/assets/section_3.4_1686989774901_0/17_648d767e-8555-4232-8be8-ff27073ed790_1686992510458.png differ
diff --git a/assets/section_3.4_1686989774901_0/20_648d7691-7c7f-435a-a441-0a4314fd9e60_1686992529065.png b/assets/section_3.4_1686989774901_0/20_648d7691-7c7f-435a-a441-0a4314fd9e60_1686992529065.png
new file mode 100644
index 0000000..ba2fe6d
Binary files /dev/null and b/assets/section_3.4_1686989774901_0/20_648d7691-7c7f-435a-a441-0a4314fd9e60_1686992529065.png differ
diff --git a/pages/hls__section_3.4_1686989774901_0.md b/pages/hls__section_3.4_1686989774901_0.md
index ed2a0ab..3759b29 100644
--- a/pages/hls__section_3.4_1686989774901_0.md
+++ b/pages/hls__section_3.4_1686989774901_0.md
@@ -48,4 +48,18 @@ file-path:: ../assets/section_3.4_1686989774901_0.pdf
   hl-color:: yellow
   id:: 648d71dd-ce78-49c5-a12c-58dea53bd4cc
   hl-type:: area
-  hl-stamp:: 1686991327483
\ No newline at end of file
+  hl-stamp:: 1686991327483
+- [:span]
+  ls-type:: annotation
+  hl-page:: 17
+  hl-color:: yellow
+  id:: 648d767e-8555-4232-8be8-ff27073ed790
+  hl-type:: area
+  hl-stamp:: 1686992510458
+- [:span]
+  ls-type:: annotation
+  hl-page:: 20
+  hl-color:: yellow
+  id:: 648d7691-7c7f-435a-a441-0a4314fd9e60
+  hl-type:: area
+  hl-stamp:: 1686992529065
\ No newline at end of file
diff --git a/pages/总复习2023t1.md b/pages/总复习2023t1.md
index 060429a..f6604d0 100644
--- a/pages/总复习2023t1.md
+++ b/pages/总复习2023t1.md
@@ -2953,9 +2953,12 @@
 									- ((648d71bc-ca55-46f9-a7d4-22a339a7f9c0))
 									- Also: ((648d71dd-ce78-49c5-a12c-58dea53bd4cc))
 									- Examples
-										- Union distribution
-										- Exponential distribution : 知道过程结果
+										- Uniform distribution:
+											- ((648d767e-8555-4232-8be8-ff27073ed790))
+										- Exponential distribution : 知道过程结果 #flashcard
+											- ((648d7691-7c7f-435a-a441-0a4314fd9e60))
 										- Normal distribution: 记结论
+											-
 							- $min(X,Y)$
 								-
 							- $max(X, Y)$