What does 2 Kings 9:21 mean?

Joram said, Get my chariot ready! So they prepared his chariot, and Joram king of Israel and Ahaziah king of Judah both rode out to meet Jehu. They met him at the field that had belonged to Naboth of Jezreel. 2 Kings 9:21 - Modern Text Bible

(Both kings go out to confront Jehu, meeting him at a field with a dark history—Naboth’s vineyard, which Ahab’s family had stolen.)