diff --git a/assets/section_2.5_1686968005870_0.edn b/assets/section_2.5_1686968005870_0.edn
index cdf9f9d..43be5f8 100644
--- a/assets/section_2.5_1686968005870_0.edn
+++ b/assets/section_2.5_1686968005870_0.edn
@@ -57,5 +57,17 @@
                           :rects (),
                           :page 14},
                :content {:text "[:span]", :image 1686971806691},
+               :properties {:color "yellow"}}
+              {:id #uuid "648d26c8-0292-4c02-8d6e-2b4f5cb10385",
+               :page 18,
+               :position {:bounding {:x1 36,
+                                     :y1 133.8330078125,
+                                     :x2 560,
+                                     :y2 365.8330078125,
+                                     :width 677.2919999999999,
+                                     :height 507.96853333333326},
+                          :rects (),
+                          :page 18},
+               :content {:text "[:span]", :image 1686972103740},
                :properties {:color "yellow"}}],
  :extra {:page 18}}
diff --git a/assets/section_2.5_1686968005870_0/18_648d26c8-0292-4c02-8d6e-2b4f5cb10385_1686972103740.png b/assets/section_2.5_1686968005870_0/18_648d26c8-0292-4c02-8d6e-2b4f5cb10385_1686972103740.png
new file mode 100644
index 0000000..499958f
Binary files /dev/null and b/assets/section_2.5_1686968005870_0/18_648d26c8-0292-4c02-8d6e-2b4f5cb10385_1686972103740.png differ
diff --git a/pages/hls__section_2.5_1686968005870_0.md b/pages/hls__section_2.5_1686968005870_0.md
index e71ac3d..71152f0 100644
--- a/pages/hls__section_2.5_1686968005870_0.md
+++ b/pages/hls__section_2.5_1686968005870_0.md
@@ -35,4 +35,11 @@ file-path:: ../assets/section_2.5_1686968005870_0.pdf
   hl-color:: yellow
   id:: 648d25a0-12d9-47c5-b9ca-f7cafdf15d89
   hl-type:: area
-  hl-stamp:: 1686971806691
\ No newline at end of file
+  hl-stamp:: 1686971806691
+- [:span]
+  ls-type:: annotation
+  hl-page:: 18
+  hl-color:: yellow
+  id:: 648d26c8-0292-4c02-8d6e-2b4f5cb10385
+  hl-type:: area
+  hl-stamp:: 1686972103740
\ No newline at end of file
diff --git a/pages/总复习2023t1.md b/pages/总复习2023t1.md
index 6669f04..248d05c 100644
--- a/pages/总复习2023t1.md
+++ b/pages/总复习2023t1.md
@@ -2791,6 +2791,7 @@
 							  collapsed:: true
 								- ((648c63da-deea-42ab-8f72-f3219d4fecbc))
 						- Poisson distribution
+						  id:: 648c650a-e188-49a6-9f89-9a3407057ddf
 						  collapsed:: true
 							- Definition: :-> ((648c653d-ed40-4938-9124-cf4c2c296867))
 							  id:: 648c6510-49a0-4673-bf16-4cf9f47efa14
@@ -2809,12 +2810,13 @@
 							- Standard distribution ((648d1f39-bc89-4efe-98b3-1c654716cf65))
 							- Properties
 								- mean and variance :-> ((648d1bfd-fcfb-43ed-801e-0de972c24cb1))
-						- Exponential Distribution
+						- Exponential Distribution -> ((648c650a-e188-49a6-9f89-9a3407057ddf))
 							- Definition: #flashcard
 								- ((648d25a0-12d9-47c5-b9ca-f7cafdf15d89))
-								-
+								- Properties
 									- Mean, variance :-> ((648d25a0-12d9-47c5-b9ca-f7cafdf15d89))
-								- Memoryless
+									- Memory-less #flashcard
+										- ((648d26c8-0292-4c02-8d6e-2b4f5cb10385))
 						- Normal Distribution
 			- LATER 学积分
 			  :LOGBOOK: