The engagement ring is worn correctly on the middle finger of the left hand. Westerners believe that the left hand represents luck, so most rings related to marriage are worn on the left hand, and wearing a ring on the left finger means engagement, so it is appropriate to wear the marriage ring on the left middle finger when proposing marriage. Because after the marriage proposal is successful, it represents engagement in a certain sense, and then marriage, and before the marriage certificate is officially received, the ring can be worn on the middle finger.