Hello, @houijiaymen,
Please use the Loco translate plugin on your site. After installing the plugin please Navigate to Loco >> Themes >> XStore >> Edit the translation which you are using for the site >> Click the Sync button >> Find the words and add the translation for them and save it.
Also, please Navigate to Loco >> Plugins >> Woocommerce >> Edit the translation which you are using for the site >> Click the Sync button >> Find the words and add the translation for them and save it.
Also, please Navigate to Loco >> Plugins >> XStore-Core >> Edit the translation which you are using for the site >> Click the Sync button >> Find the words and add the translation for them and save it.
https://wordpress.org/plugins/loco-translate/
Note:
1. Custom (recommended)
2. This is Loco’s protected folder under “wp-content/languages/loco/” which is safe from automatic updates and provides priority over the above locations.
If this folder doesn’t exist you may need to create it and ensure it has the correct permissions.
https://localise.biz/wordpress/plugin/manual/filesystem
OR if you want to translate and use your site in multilanguage then you have to purchase and use the WPML plugin, you can further check the WPML site here: https://wpml.org/
Hope this helps.
Regards 8Themes Team.