Sinicization of religions is the highest principle guiding China's approach to religious issues and church-state relations today. It is also one of the most frequently discussed and misunderstood principles in the international community. This paper seeks to explain the essence, connotations, and practical manifestations of Sinicization of religions by drawing on the dialectical principle of "the one and the many" in Chinese philosophy. It is an attempt to construct an international narrative of Sinicization of religions, aiming to provide a foundation for dialogue between Chinese and Western scholars on this topic.