1, with different functions: the enhanced version of Zhonghe System is a learning tool developed by Zhonghe Education Company, which mainly helps users to conduct self-test and consolidate knowledge learning, while the recitation version is a preparation tool specifically for various exams such as postgraduate entrance examination, English Band 4 and Band 6.

2. Different purposes: The enhancement of the all-in-one system is mainly to help users conduct self-testing, consolidate knowledge learning, and improve the learning effect through system testing and feedback. Reciting edition adopts scientific memory rules to systematically sort out and group complex and difficult contents, so as to help candidates master knowledge and skills easily.