In the leisure area, click the object you want to use (that is, the player, or you can use it yourself). After selection, there is a "Prop Use" in the lower right corner of the game interface. Click on the props to use, and the props you currently have will appear. The props you currently have will glow. Find the heart-shaped fireworks. If they are bright (which means you have this prop), you can click on "Heart-shaped Fireworks" to choose them for you. ! ! You can try! ! !