Chinese product evaluation never happens in a vacuum—quality is always judged relative to price and situation. The key concept is 性价比 (performance-to-price ratio): the best product is not the one with absolute highest quality but the one offering the best quality for its price point.
This means comparisons matter more than absolute judgments. When selecting or presenting products, always frame quality in relation to cost and competitive alternatives. Equally important is contextual appropriateness: different situations call for different quality levels. A product too cheap for an important occasion signals disrespect; one too expensive may seem inappropriate or presumptuous.
Match quality to purpose and relationship. Demonstrate that you understand the specific context and have calibrated your product choices accordingly. Optimization across function, cost, and appropriateness is the goal—not maximization of any single dimension.