After commanding Reynolds, Grace introduced herself to Isha and Eshwar before taking them to the sparring ground, since it seemed like it would take some time for Reynolds and Neal to get there, after Isha rejected her offer to show them around the academy since Isha herself had already memorised most of it in the past week.
The sparring ground was as big as a coliseum from Earth, and the inside was very coliseum-y like too. The inside was a large, pristine, matted field that had tonnes of seats for the onlookers surrounding it. The ground seemed to be at least 1000 feet wide, and the ceiling above was filled with lighting that lit the whole coliseum.