Merry Christmas

🎄 手势控制 / Gesture Control:

• ✋ 5 Fingers: 显示 "我" (Show "I")
• ✌️ 2 Fingers: 显示 "爱" (Show "Love")
• ☝️ 1 Finger: 显示 "你" (Show "You")
• ✊ Default: 圣诞树 (Christmas Tree)

👋 移动手指拨动粒子 (Touch to scatter particles)