diff --git a/Study/DL/Diffusion学习笔记.md b/Study/DL/Diffusion学习笔记.md
index 3b78b67..d8f1af7 100644
--- a/Study/DL/Diffusion学习笔记.md
+++ b/Study/DL/Diffusion学习笔记.md
@@ -1,3 +1,4 @@
 # 证据下界(Evidence Lower Bound)
 
 $\text{ELBO} = \mathbb{E}_{q(z)}\left[\log p(x \mid z)\right] - \text{KL}(q(z) \parallel p(z))$
+  1207
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