Here is a summary of the article in 160 words or less: The article describes how to remove the payment detection of a certain blog plugin. The author first analyzes the plugin's authorization mechanism and finds the specific code responsible for the detection. They then use various tools such as Jadx, dex2jar, and smali to decompile and modify the plugin's code. The author provides detailed steps on how to use these tools to convert the class file to dex, then to smali, and finally modify the smali code to remove the payment detection. The article also includes screenshots and code snippets to illustrate the process. By following these steps, readers can successfully remove the payment detection of the plugin and use it for free.