This is a novel about magic and adventure. Assuming that these seven people were all magicians, they could use various spells to fill each bag and get more big cats. For example, they could cast spells to turn each big cat into more kittens or use magic to move the items in each bag to another place. If these seven people were adventurers, they might try to find more clues and resources in order to obtain more big cats. For example, they might head to the nearby forest or mountain range to find more magic crystals or treasures to obtain more big cats. If these seven people came from different places, they might have different strategies and plans to get more big cats. For example, one person could be responsible for managing the bag, another person could be responsible for finding resources, and the others could be responsible for casting spells or taking risks. If the seven bags were brought by the same big cat, then the person might use magic to change the attributes or abilities of the big cat to get more big cats. For example, he could use magic to make the big cats stronger or have other abilities to obtain more big cats.