pp_cms/webApp/backend/components/gii/model/Generator.php

<?php
/**
 * Author: lf
 * Blog: https://blog.feehi.com
 * Email: job@feehi.com
 * Created at: 2020-03-16 22:56
 */
namespace backend\components\gii\model;

class Generator extends \yii\gii\generators\model\Generator
{
    public $ns = 'common\models';
    public $queryNs = 'common\models';

}