HarmonyOS NEXT is a distributed operating system developed to support HarmonyOS native apps. To support the new and independent Harmony ecosystem, developers are required to migrate their applications from Android to HarmonyOS. However, HarmonyOS utilizes ArkTS, a superset of TypeScript, as the programming language for application development. Hence, migrating applications to HarmonyOS requires translating programs across different program languages, e.g., Java, which is known to be very challenging, especially for concurrency programs. Java utilizes shared memory to implement concurrency programs, while ArkTS relies on message passing (i.e., Actor model). This paper presents an LLM-based concurrent Java program to ArkTS converter.