(Systematization of content: Starting from C and C++, explain the most commonly used underlying core technologies of BATJ enterprise-level android development from multiple angles, actual combat is king: combine practice, cover hot technologies in an all-round way, design and implement complete projects, and make technical reserves to improve Thinking ability: The strength explanations of technical masters allow you to effectively improve the abstraction ability of the code, not just stay at the business level, and use it immediately after learning: combined with actual work teaching, the technical points are truly closely integrated with the actual work application, learning Just do it.)