diff --git a/notebook/notebook_ch/4.ppcor_system_strategy/PP-OCR系统及优化策略.ipynb b/notebook/notebook_ch/4.ppocr_system_strategy/PP-OCR系统及优化策略.ipynb
similarity index 100%
rename from notebook/notebook_ch/4.ppcor_system_strategy/PP-OCR系统及优化策略.ipynb
rename to notebook/notebook_ch/4.ppocr_system_strategy/PP-OCR系统及优化策略.ipynb