On September 21, Huawei Cloud announced a comprehensive upgrade of its CodeArts coding agent for HarmonyOS developers, launching the HarmonyOS coding large model, the HarmonyOS coding agent, and the HarmonyOS developer practice center. The coding large model, trained on over one million HarmonyOS samples, reduces errors per thousand lines by more than 80%, raises one-time compilation pass rate by over 78%, and cuts token consumption per task by over 20%; the coding agent covers the full process from requirement analysis to compilation and build and includes a built-in DevEco CLI for invoking HarmonyOS on-device simulators.