During April 2025, Pingcap contributed to five repositories, focusing on code refactoring, documentation, and testing in Go and C++. In kaiachain/kaia, Pingcap refactored memory call logic to use built-in max and min functions, improving code clarity and reducing error risk. For onflow/cadence and ethereum/solidity, Pingcap enhanced documentation by aligning comments with actual code and removing redundancies, supporting maintainability. In xmtp/xmtpd, Pingcap clarified testing utility comments, ensuring accurate usage. Within cosmos/cosmos-sdk, Pingcap refactored the IsFormatSupported check using slices.Contains and expanded test coverage. These changes collectively improved code readability, documentation accuracy, and test reliability across diverse codebases.