1. Reliable 2. Because Pinduoduo is a well-known e-commerce platform with a huge user base and rich product resources, the schoolbags of more than 30 yuan sold should be screened and reviewed, with certain quality assurance.

3. In addition, Pinduoduo also provides a user evaluation and scoring system, which can help consumers understand the evaluation and use experience of other buyers on the schoolbag, and further judge their reliability. If the evaluation is good and has a high score, then the bag can be considered a reliable choice.