During November 2024, Liujun Liu enhanced the baidubce/bce-qianfan-sdk repository by delivering v2 API support and improving authentication mechanisms within the Go SDK. Focusing on API integration and SDK development, Liujun introduced a new method for IAM Bearer Token retrieval and created a dedicated struct for Chat Completion v2 requests. The work involved refactoring request handling to support multiple API versions and authentication methods, which streamlined onboarding for new features and strengthened security. Using Go, Liujun’s contributions addressed evolving API requirements and authentication needs, demonstrating a solid grasp of SDK architecture and modern API integration practices within a short timeframe.