“桂 J” is pronounced as “Guì J”. In English, “Guì” is pronounced like “gway” with a soft “g” sound and a long “u” sound. And “J” is simply pronounced as “jay”. When referring to license plates or designations starting with “桂 J”, this is how they would be read. For example, if someone says “I saw a car with the license plate starting with Guì J.”, it can be read as “I saw a car with the license plate starting with ‘gway jay’.”.
