WXXR/miniprogram/assets/animation/miku-kawaii-animation.json

{
  "keyframe": {
    "parent": {
      "0": {
        "rotation": [0, 0, 0]
      },
      "100": {
        "rotation": [0, 6.28, 0]
      }
    },
    "child": {
      "0": {
        "position.y": -0.5
      },
      "100": {
        "position.y": 1.5
      }
    }
  },
  "animation": {
    "parent": {
      "keyframe": "parent",
      "duration": 8,
      "ease": "linear",
      "loop": -1
    },
    "child": {
      "keyframe": "child",
      "duration": 4,
      "ease": "ease-in-out",
      "direction": "both",
      "loop": -1
    }
  }
}