In the dream-weaving and heart-warming activities, players can participate in drawing cards by consuming physical strength, and every time they draw cards, they have the opportunity to get rewards for items including hairballs. But every time you draw a card, you don't necessarily give two hairballs, but you have a certain probability to get hairballs and other items.
Therefore, in order to get more hairballs, players need to constantly participate in activities and draw cards as much as possible.