莞: A gentle smile, described as "a delicate and charming smile," embodies elegance and dexterity, signifying wisdom, understanding, warmth, and cleverness, leading to prosperity, success, and happiness.

桦: The tree species, birch. "Birch" symbolizes the toughness akin to a tree, unyielding to wind and rain, metaphorically representing a robust physique conducive to good health.