5

After doing a bit of research, it appears that the great firewall of china is blocking google, facebook and other social media from the west, or east for that matter, depending on how you wanna look at it lol.

So you need to be sure you don’t have ANY integration of those in China.
Then, you could do a simple local hosted .cn website that has an iframe of your .com orr other international TLDs that you have on your main domain.

https://www.comparitech.com/privacy-security-tools/blockedinchina/ check with this if your domain is blocked or not.

    <?php
list($host) = explode(".",$_SERVER["SERVER_NAME"]);

$var ="<iframe width='100%' height='100%' style='height: 100vh; border: none;' src='https://appName.bubbleapps.io/></iframe>";
$var .= "<style>";
$var .= "body {margin: 0;}";
$var .= "</style>";
echo $var;

?>

Where you can replace appname.bubbleapps.io with your main domain.
Now you only have to place this code in your index.php file in your .cn domain.
It will load a full screen, no scroll bar, windowsless/box-free iframe of your main domain inside you .cn domain.

Hope it helps