Update README.md

README.md

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 # Introduction
 There are four folders:  
-**./pink original** images from videoes and dynamics, and they are all cut into squares  
+**./pink original** 30 images from videoes and dynamics, and they are all cut into squares  
 **./pink_cleaned**  
 **./pink_cleaned_processed** clean the background and fill it with white colour, I recommend use this folder  
 **./style_new** cute small girl style, I do not use them but just collect for storage