$arr1 ["han"]["weight"] : 60
$arr1 ["han"]["height"] : 170
$arr1 ["seo"]["weight"] : 70
$arr1 ["seo"]["height"] : 180
$arr2["han"]["weight"] : 60
$arr2["han"]["height"] : 170
$arr2["seo"]["weight"] : 70
$arr2["seo"]["height"] : 180