TITLE: GCN CIRCULAR NUMBER: 34171 SUBJECT: GRB 230628C: GRID Detection DATE: 23/07/08 14:30:08 GMT FROM: GRID Student Team at Tsinghua University Chenyu Wang and Zirui Yang report on behalf of the GRID Collaboration: The long-duration GRB 230628C (Fermi GBM detection: GCN Circular 34106) was observed with GRID-07. The detection was confirmed at the trigger time 2023-06-28T17:36:22.8 UTC. The T90 duration measured with GRID is 49.0 s. A brief introduction to GRID can be found at https://doi.org/10.1007/s10686-019-09636-w and https://doi.org/10.1007/s10686-021-09819-4.