Literature Reference: 四松初移时，大抵三尺强。别来忽三载，离立如人长。—— 杜甫《四松》 When the four pines were first transplanted, they were about three feet tall. After being apart for three years, they now stand tall like people. — Du Fu, 'Four Pines'
四: Numbers and numerals.
松: Pine trees, symbolizing a life of carefree ease and tranquility, also embody the virtues of towering strength, honesty, and reliability when used in names.
Meaning: The four pines symbolize resilience and growth, standing tall even in adversity.