Feedback has been increasingly conceptualised as a dialogical process where students interpret the provided information through interaction with comment providers and use it to enhance their learning. A major challenge for the development of sustainable feedback is closely related to how students think about it. This study explored how 25 Chinese university students made sense of instructor and peer feedback following their English group presentations. The findings reveal that most of the participants perceived more judging and encouraging functions of feedback than its improving functions, which reflected their conventional thinking about feedback. Variation also existed in the perceived functions of instructor and peer feedback. Imbalanced power relations, face, group harmony and instructors' feedback practice as well as students' past learning and assessment experiences appeared to inhibit the participants from viewing feedback in a sustainable way. This study sheds light on college students' complex thinking about feedback in a non-Anglophone context which has been neglected in the feedback literature, and has implications for educators and researchers in facilitating sustainable feedback in the Chinese context and the non-Chinese contexts where Chinese students study.