water/server/plugin/saipackage/config/translation.php

<?php

return [
    // Default language
    'locale' => 'zh_CN',
    // Fallback language
    'fallback_locale' => ['zh_CN', 'en'],
    // Folder where language files are stored
    'path' => base_path() . "/plugin/saipackage/resource/translations",
];