diff --git a/assets/section_2.4_1686920705980_0.edn b/assets/section_2.4_1686920705980_0.edn
index 697492e..57e4ce2 100644
--- a/assets/section_2.4_1686920705980_0.edn
+++ b/assets/section_2.4_1686920705980_0.edn
@@ -67,5 +67,17 @@
                           :rects (),
                           :page 4},
                :content {:text "[:span]", :image 1686921154364},
+               :properties {:color "yellow"}}
+              {:id #uuid "648c6007-c181-4e85-9a88-046841e6739d",
+               :page 9,
+               :position {:bounding {:x1 48.16666603088379,
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+                                     :y2 343.5830078125,
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+                                     :height 544.252},
+                          :rects (),
+                          :page 9},
+               :content {:text "[:span]", :image 1686921222888},
                :properties {:color "yellow"}}],
- :extra {:page 9}}
+ :extra {:page 12}}
diff --git a/assets/section_2.4_1686920705980_0/9_648c6007-c181-4e85-9a88-046841e6739d_1686921222888.png b/assets/section_2.4_1686920705980_0/9_648c6007-c181-4e85-9a88-046841e6739d_1686921222888.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 c4a1357..ad338de 100644
--- a/pages/hls__section_2.4_1686920705980_0.md
+++ b/pages/hls__section_2.4_1686920705980_0.md
@@ -31,4 +31,11 @@ file-path:: ../assets/section_2.4_1686920705980_0.pdf
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   hl-type:: area
-  hl-stamp:: 1686921154364
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+  hl-stamp:: 1686921154364
+- [:span]
+  ls-type:: annotation
+  hl-page:: 9
+  hl-color:: yellow
+  id:: 648c6007-c181-4e85-9a88-046841e6739d
+  hl-type:: area
+  hl-stamp:: 1686921222888
\ No newline at end of file
diff --git a/pages/总复习2023t1.md b/pages/总复习2023t1.md
index 9ec7ad3..020b364 100644
--- a/pages/总复习2023t1.md
+++ b/pages/总复习2023t1.md
@@ -2782,6 +2782,8 @@
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+							- Properties:
+								- mean, variance ((648c6007-c181-4e85-9a88-046841e6739d))
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 			- LATER 学积分
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