diff --git a/assets/section_3.1_1686980736370_0.edn b/assets/section_3.1_1686980736370_0.edn
index 97de891..27515cb 100644
--- a/assets/section_3.1_1686980736370_0.edn
+++ b/assets/section_3.1_1686980736370_0.edn
@@ -45,5 +45,17 @@
                           :rects (),
                           :page 10},
                :content {:text "[:span]", :image 1686982093041},
+               :properties {:color "yellow"}}
+              {:id #uuid "648d4dd7-6ecc-479d-bd1e-0280c9bb7155",
+               :page 11,
+               :position {:bounding {:x1 50,
+                                     :y1 59.5830078125,
+                                     :x2 623,
+                                     :y2 522.5830078125,
+                                     :width 725.67,
+                                     :height 544.252},
+                          :rects (),
+                          :page 11},
+               :content {:text "[:span]", :image 1686982102212},
                :properties {:color "yellow"}}],
  :extra {:page 10}}
diff --git a/assets/section_3.1_1686980736370_0/11_648d4dd7-6ecc-479d-bd1e-0280c9bb7155_1686982102212.png b/assets/section_3.1_1686980736370_0/11_648d4dd7-6ecc-479d-bd1e-0280c9bb7155_1686982102212.png
new file mode 100644
index 0000000..ce764f6
Binary files /dev/null and b/assets/section_3.1_1686980736370_0/11_648d4dd7-6ecc-479d-bd1e-0280c9bb7155_1686982102212.png differ
diff --git a/pages/hls__section_3.1_1686980736370_0.md b/pages/hls__section_3.1_1686980736370_0.md
index 3473510..c893a09 100644
--- a/pages/hls__section_3.1_1686980736370_0.md
+++ b/pages/hls__section_3.1_1686980736370_0.md
@@ -28,4 +28,11 @@ file-path:: ../assets/section_3.1_1686980736370_0.pdf
   hl-color:: yellow
   id:: 648d4dce-72e2-4d0b-a70e-fefaa2b1ee4c
   hl-type:: area
-  hl-stamp:: 1686982093041
\ No newline at end of file
+  hl-stamp:: 1686982093041
+- [:span]
+  ls-type:: annotation
+  hl-page:: 11
+  hl-color:: yellow
+  id:: 648d4dd7-6ecc-479d-bd1e-0280c9bb7155
+  hl-type:: area
+  hl-stamp:: 1686982102212
\ No newline at end of file
diff --git a/pages/总复习2023t1.md b/pages/总复习2023t1.md
index 2e62932..8945868 100644
--- a/pages/总复习2023t1.md
+++ b/pages/总复习2023t1.md
@@ -2872,8 +2872,8 @@
 								- ((648d4b39-6c56-4dd6-af90-c3e1e81e90ff))
 								- Marginal Distribution:
 									- ((648d4b7a-64fa-4e2a-a5db-4970c647527c))
-									- LATER Examples
-										-
+									- LATER Examples ((648d4dce-72e2-4d0b-a70e-fefaa2b1ee4c)) #flashcard
+										- ((648d4dd7-6ecc-479d-bd1e-0280c9bb7155))
 			- LATER 学积分
 			  :LOGBOOK:
 			  CLOCK: [2023-06-03 Sat 17:05:07]--[2023-06-03 Sat 17:05:08] =>  00:00:01