There were many dungeons in Tianqi University, more than all the high schools in Jiang City combined. There were also sub-categories, such as single-player dungeons for attribute points, equipment dungeons for equipment, materials dungeons for various materials, and so on.
Different types of dungeons had different drop rates. Basically, it all depended on the player's needs.
If you want equipment and "dog food", you could go to the equipment dungeon and stay for a few days. You could get several times more equipment than in other dungeons.
If one wanted scrolls and food that could add buffs, they could go to the material book dungeons. If they were lucky, they might even get precious items such as fate of encounters or fate of entanglement.