The configuration file is stored in the $config['wx'] collection in the data/config.php file under the project
$config['wx']['appid']
$config['wx']['secret']
$config['wx']['mchid']
$config['wx']['key']
$config['wx']['sslcert']
$config['wx']['sslkey']
$config['wx']['log_file']
$config['wx']['dev']
$config['wx']['dev_token']
$config['wx']['dev_asekey']
$config['wx']['cache']
$config['wx']['url']
$config['wx']['subscribe']
$config['wx']['qrcode']
$config['wx']['face_save']
$config['wx']['face_dir']