diff --git a/Paper/Diffusion/Imagic.md b/Paper/Diffusion/Imagic.md
index 21e98d6..01f2f60 100644
--- a/Paper/Diffusion/Imagic.md
+++ b/Paper/Diffusion/Imagic.md
@@ -12,3 +12,4 @@
    2. 冻结Diffusion模型参数，对$e$进行优化。
 2. Diffusion Model fine-tuning
 3. Linear interpolation
+   $\bar e = \eta \cdot e_{tgt} + (1 - \eta) \cdot e_{opt}$