Llama3.1-70B-Chinese-Chat is an instruction-tuned language model based on the Meta-Llama-3.1-70B-Instruct model, specifically designed for Chinese and English bilingual users, with diverse capabilities such as role-playing and tool utilization. This model is fine-tuned using the ORPO algorithm, significantly reducing instances where Chinese questions receive English answers and cases of mixed language responses, particularly showing notable improvements in role-playing, function invocation, and mathematical abilities.