diff --git a/assets/section_1.5_1686903326304_0.edn b/assets/section_1.5_1686903326304_0.edn
index 447666c..60e28f7 100644
--- a/assets/section_1.5_1686903326304_0.edn
+++ b/assets/section_1.5_1686903326304_0.edn
@@ -66,4 +66,4 @@
                           :page 29},
                :content {:text "Bayes’ Theorem"},
                :properties {:color "red"}}],
- :extra {:page 37}}
+ :extra {:page 39}}
diff --git a/assets/section_1.6_1686904326481_0.edn b/assets/section_1.6_1686904326481_0.edn
new file mode 100644
index 0000000..423345f
--- /dev/null
+++ b/assets/section_1.6_1686904326481_0.edn
@@ -0,0 +1,18 @@
+{:highlights [{:id #uuid "648c1e25-4336-48ba-bd20-d156a4c8df7a",
+               :page 4,
+               :position {:bounding {:x1 14.173179626464844,
+                                     :y1 13.255218505859375,
+                                     :x2 308.7949447631836,
+                                     :y2 39.921875,
+                                     :width 604.7249999999999,
+                                     :height 453.54333333333324},
+                          :rects ({:x1 14.173179626464844,
+                                   :y1 13.255218505859375,
+                                   :x2 308.7949447631836,
+                                   :y2 39.921875,
+                                   :width 604.7249999999999,
+                                   :height 453.54333333333324}),
+                          :page 4},
+               :content {:text "Independence of Two Events"},
+               :properties {:color "blue"}}],
+ :extra {:page 5}}
diff --git a/assets/section_1.6_1686904326481_0.pdf b/assets/section_1.6_1686904326481_0.pdf
new file mode 100644
index 0000000..163a557
Binary files /dev/null and b/assets/section_1.6_1686904326481_0.pdf differ
diff --git a/pages/hls__section_1.6_1686904326481_0.md b/pages/hls__section_1.6_1686904326481_0.md
new file mode 100644
index 0000000..17c116d
--- /dev/null
+++ b/pages/hls__section_1.6_1686904326481_0.md
@@ -0,0 +1,8 @@
+file:: [section_1.6_1686904326481_0.pdf](../assets/section_1.6_1686904326481_0.pdf)
+file-path:: ../assets/section_1.6_1686904326481_0.pdf
+
+- Independence of Two Events
+  ls-type:: annotation
+  hl-page:: 4
+  hl-color:: blue
+  id:: 648c1e25-4336-48ba-bd20-d156a4c8df7a
\ No newline at end of file
diff --git a/pages/总复习2023t1.md b/pages/总复习2023t1.md
index cdd2abf..05f77c6 100644
--- a/pages/总复习2023t1.md
+++ b/pages/总复习2023t1.md
@@ -2675,6 +2675,7 @@
 					- ((648c1afb-77a7-4f91-b6e9-20351b320254))
 					- ((648c1b5f-f72c-495e-8c8a-b184c8682d74))
 					- ((648c1bb4-f300-43f1-a55f-ca859720ee6b))
+					- ((648c1e25-4336-48ba-bd20-d156a4c8df7a)) ![section 1.6.pdf](../assets/section_1.6_1686904326481_0.pdf)
 			- LATER 学积分
 			  :LOGBOOK:
 			  CLOCK: [2023-06-03 Sat 17:05:07]--[2023-06-03 Sat 17:05:08] =>  00:00:01