马: Horses. In personal names, it symbolizes swift success and invincible prowess in all endeavors.
杜: Du Kang, Du Fu. The character "Du" refers to the sweet pear tree, as stated in the "Shuowen Jiezi" dictionary: "The male is called 'Tang', and the female is called 'Du'."
Meaning: Mǎ Dù, with harmonious phonetics, symbolizes galloping strength and steadfast depth.