请提供五个最受欢迎的旅游景点名称，并以Json格式给出。
user
{
    "popular_attractions": [
        {"name": "故宫博物院"},
        {"name": "长城"},
        {"name": "黄山"},
        {"name": "桂林漓江"},
        {"name": "九寨沟"}
    ]
}
assistant