local root = {
    {
        chapterId = 1,
        id = 1,
        points = 4,
        items = {{id=101,count=80}}
    },
    {
        chapterId = 1,
        id = 2,
        points = 6,
        items = {{id=101,count=90}}
    },
    {
        chapterId = 1,
        id = 3,
        points = 7,
        items = {{id=101,count=100},{id=102,count=50}}
    },
    {
        chapterId = 2,
        id = 1,
        points = 10,
        items = {{id=101,count=80}}
    },
    {
        chapterId = 2,
        id = 2,
        points = 20,
        items = {{id=101,count=90}}
    },
    {
        chapterId = 2,
        id = 3,
        points = 30,
        items = {{id=101,count=100},{id=102,count=50}}
    }
}
return root