Yes. "Onion mixed with tofu, one is clear and two are white" comes from the 76th chapter of A Dream of Red Mansions. It has two parts, and it is often used as a metaphor for being very innocent or very clear in my heart. It is a two-part allegorical saying. Two-part allegorical sayings consist of two parts: the former part plays the role of "introduction" and the latter part plays the role of "back lining".