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

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