diff --git a/README.md b/README.md
index 0446ed6..097c152 100644
--- a/README.md
+++ b/README.md
@@ -31,6 +31,14 @@ PDV supports visualizing N-linked intact glycopeptide identification result (ide
 
 [<img src="http://pdv.zhang-lab.org/data/download/PDV_USI_example.jpeg" width=600 class="center">](http://www.psidev.info/usi)
 
+
+#### [Mirror plot](https://github.com/wenbostar/PDV/wiki/Mirror-plot:-observed-vs-predicted-spectra) (Experimental spectrum VS predicted spectrum using deep learning)
+
+Top panel: experimental spectrum, bottom panel: predicted spectrum using deep learning.
+
+<img src="https://github.com/wenbostar/PDV/assets/5302110/bbf49a24-5a68-41f4-85a0-1091e0013d7b" width=600 class="center">
+
+
 #### Database searching:
 
 | Software        | Example files |
@@ -60,7 +68,7 @@ PDV supports visualizing N-linked intact glycopeptide identification result (ide
 
 | Software        | Example files |
 | ----------------|:---------------|
-| [Casanovo](https://github.com/Noble-Lab/casanovo) | mgf:mzTab |
+| [Casanovo](https://github.com/Noble-Lab/casanovo) | [Manual](https://github.com/wenbostar/PDV/wiki/Visualize-Casanovo-result) |
 | [Novor](https://www.ncbi.nlm.nih.gov/pubmed/26122521) | [mgf](http://pdv.zhang-lab.org/data/download/test_data/msdata/SF_200217_U2OS_TiO2_HCD_OT_rep1.mgf.gz):[csv](http://pdv.zhang-lab.org/data/download/test_data/novor/SF_200217_U2OS_TiO2_HCD_OT_rep1.novor.csv.gz) (only support the Novor result generated through [DeNovoGUI](https://github.com/compomics/denovogui)) |
 | [DeepNovo](https://github.com/nh2tran/DeepNovo) | [mgf](http://pdv.zhang-lab.org/data/download/test_data/deepnovo/peaks.db.mgf.test.dup.mgf.gz):[txt](http://pdv.zhang-lab.org/data/download/test_data/deepnovo/output.deepnovo_db.tab) |
 | [PepNovo+](http://proteomics.ucsd.edu/software-tools/531-2/) | [mgf](http://pdv.zhang-lab.org/data/download/test_data/msdata/SF_200217_U2OS_TiO2_HCD_OT_rep1.mgf.gz):[txt](http://pdv.zhang-lab.org/data/download/test_data/pepnovo/SF_200217_U2OS_TiO2_HCD_OT_rep1.mgf.out) |