Imitate the C method of ThinkPHP by yourself and deepen your understanding of the internal implementation of ThinkPHP; In-depth explanation of ThinkPHP's display method, and learn how to implement page display in view files; Write a ThinkPHP display method yourself to improve your practical experience; Analyze ThinkPHP's success function and understand its working principle and usage; Write a ThinkPHP success method yourself to improve your programming skills; Gain an in-depth understanding of ThinkPHP's assign method, and master how to implement page jumps and data transfer through this method; Write an assign method yourself and master the implementation of custom assign; Discuss the use and principles of ThinkPHP's S method cache and F method cache, and understand the application of caching strategies in ThinkPHP;