How to change WordPress’s language to English
1. You should change define(‘WPLANG’,’zh_CN’) to define(‘WPLANG’,”) in wp-config.php
2. Delete the wp-content/language folder
3. Change your timezone to New York
4. Change your timezone to Utc xx
Note: If you don’t follow the step 4 you will receive the language update, and if you download a plugin, the language will back to the origin language.