I. Core Requirements 1. The contractor must decompress the client-provided target software APK installation package, perform static/dynamic analysis, and identify the software's core data structures and interaction logic. 2. Develop a lightweight dynamic library for visualizing internal test data. This function is hidden by default and requires a specific gesture/password to activate. 3. After dynamic library injection, the software must be able to seamlessly connect to the original server, run normally, and not trigger anti-fraud mechanisms on the server or client. 4. Using an authorization code, this function can only be installed and run on authorized devices; it cannot be activated on unauthorized devices. II. Technical Requirements 1. Use legal and compliant tools for APK decompression, dynamic library injection, and function development. Do not tamper with core server data to ensure stable software operation and avoid issues such as memory leaks, crashes, or lag. 2. The development process must comply with Android system specifications and be compatible with mainstream Android versions running on the target software (the client must specify the compatible version range in advance). 3. Deliverables List: ◦ ① Complete integrated target APK installation package with valid signature + detailed installation and deployment instructions ◦ ② Instructions, operating steps, and precautions for triggering the overlay function ◦ ③ Server-side interconnection verification report + fraud prevention mechanism avoidance report 4. The contractor must strictly maintain the confidentiality of all project data, including but not limited to APK analysis results, dynamic library source code, test data, etc. Upon project acceptance, all related files must be completely deleted and may not be retained, distributed, or used for any other purpose.