$serch="/<li>(.*?)<\/li>/";
preg_match_all($serch,file_get_contents('./cn_name.html'),$r,PREG_SET_ORDER );
$result=[];
foreach($r as $k => $v){
    //$v[1]=str_replace('(','',$v[1]);
    //$v[1]=str_replace(')','',$v[1]);
    array_push($result,$v[1]);
}
file_put_contents('./cn_name.json',json_encode($result));