diff --git a/assets/section_2.5_1686968005870_0.edn b/assets/section_2.5_1686968005870_0.edn
index 5607746..f3a1b00 100644
--- a/assets/section_2.5_1686968005870_0.edn
+++ b/assets/section_2.5_1686968005870_0.edn
@@ -69,5 +69,17 @@
                           :rects (),
                           :page 18},
                :content {:text "[:span]", :image 1686972103740},
+               :properties {:color "yellow"}}
+              {:id #uuid "648d27e3-1886-4b09-a18d-8a89d33e745a",
+               :page 21,
+               :position {:bounding {:x1 40,
+                                     :y1 59.916015625,
+                                     :x2 636,
+                                     :y2 213.916015625,
+                                     :width 677.2919999999999,
+                                     :height 507.96853333333326},
+                          :rects (),
+                          :page 21},
+               :content {:text "[:span]", :image 1686972385817},
                :properties {:color "yellow"}}],
  :extra {:page 21}}
diff --git a/assets/section_2.5_1686968005870_0/21_648d27e3-1886-4b09-a18d-8a89d33e745a_1686972385817.png b/assets/section_2.5_1686968005870_0/21_648d27e3-1886-4b09-a18d-8a89d33e745a_1686972385817.png
new file mode 100644
index 0000000..abf7b20
Binary files /dev/null and b/assets/section_2.5_1686968005870_0/21_648d27e3-1886-4b09-a18d-8a89d33e745a_1686972385817.png differ
diff --git a/pages/hls__section_2.5_1686968005870_0.md b/pages/hls__section_2.5_1686968005870_0.md
index 71152f0..15eeb77 100644
--- a/pages/hls__section_2.5_1686968005870_0.md
+++ b/pages/hls__section_2.5_1686968005870_0.md
@@ -42,4 +42,11 @@ file-path:: ../assets/section_2.5_1686968005870_0.pdf
   hl-color:: yellow
   id:: 648d26c8-0292-4c02-8d6e-2b4f5cb10385
   hl-type:: area
-  hl-stamp:: 1686972103740
\ No newline at end of file
+  hl-stamp:: 1686972103740
+- [:span]
+  ls-type:: annotation
+  hl-page:: 21
+  hl-color:: yellow
+  id:: 648d27e3-1886-4b09-a18d-8a89d33e745a
+  hl-type:: area
+  hl-stamp:: 1686972385817
\ No newline at end of file
diff --git a/pages/总复习2023t1.md b/pages/总复习2023t1.md
index 2a5fe6a..aa59dec 100644
--- a/pages/总复习2023t1.md
+++ b/pages/总复习2023t1.md
@@ -2818,7 +2818,8 @@
 									- Memory-less #flashcard
 										- ((648d26c8-0292-4c02-8d6e-2b4f5cb10385))
 								- LATER Example
-									-
+									- ((648d27e3-1886-4b09-a18d-8a89d33e745a))
+								-
 						- Normal Distribution
 			- LATER 学积分
 			  :LOGBOOK: