What's the use of love between light and night in Ursa major?

Used to draw cards. In the game "Love between Light and Night", Ursa Major is a card drawing prop in the game, which can consume 300 Ursa Major in exchange for a badminton pen in the card drawing pool, so it is used for card drawing. The Love between Light and Night, formerly known as Light and Night, is a highly immersive interactive love mobile game developed by Tencent Northern Lights Studio Group.