The Chinese word "蒙娜丽莎" is formed through phonetic transliteration, where each character is selected to approximate the sound of the English name "Mona Lisa": "蒙" (méng) for "Mo", "娜" (nà) for "na", "丽" (lì) for "Li", and "莎" (shā) for "sa". The characters are used primarily for their pronunciation rather than their meanings, resulting in a written representation that mimics the original name's sounds.