hindi font encrypting in htmldom in php

i am using acf to to enter data an also use generatepress element with php for collect elementwithtagname and show in a custom text block
but its collect english font properly but not hindi font after this code
`$htmlDom = new DOMDocument();
$htmlDom->loadHTML($html);
hindi font convert inside a special encryption
https://www.screencast.com/t/GYOpk4BFJdPZ this is code
https://www.screencast.com/t/3pLDrCQc3 and this is ugly output