Summary:
In Config > Core > Translations. If save Chinese JSON string like:
{
"Hello": "你好"
}
will be converted and saved to:
{
"Hello": "\u4f60\u597d"
}
Resolution:
change line 132:
return json_encode($value, JSON_UNESCAPED_SLASHES);
to:
return json_encode($value, JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE);