diff --git a/assets/section_3.1_1686980736370_0.edn b/assets/section_3.1_1686980736370_0.edn
index 6015423..76c6828 100644
--- a/assets/section_3.1_1686980736370_0.edn
+++ b/assets/section_3.1_1686980736370_0.edn
@@ -1 +1,13 @@
-{:highlights [], :extra {:page 5}}
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new file mode 100644
index 0000000..da062d6
--- /dev/null
+++ b/pages/hls__section_3.1_1686980736370_0.md
@@ -0,0 +1,10 @@
+file:: [section_3.1_1686980736370_0.pdf](../assets/section_3.1_1686980736370_0.pdf)
+file-path:: ../assets/section_3.1_1686980736370_0.pdf
+
+- [:span]
+  ls-type:: annotation
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+  hl-color:: yellow
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\ No newline at end of file
diff --git a/pages/总复习2023t1.md b/pages/总复习2023t1.md
index ecd11bb..a6d1671 100644
--- a/pages/总复习2023t1.md
+++ b/pages/总复习2023t1.md
@@ -2866,6 +2866,9 @@
 				  :END:
 					- Random vectors ![section 3.1.pdf](../assets/section_3.1_1686980736370_0.pdf)
 						- Random Vectors and joint distributions
+							- Definition:
+								- ((648d4a20-af7c-42d5-addc-b2909e3d9fa0))
+								-
 			- LATER 学积分
 			  :LOGBOOK:
 			  CLOCK: [2023-06-03 Sat 17:05:07]--[2023-06-03 Sat 17:05:08] =>  00:00:01