Literature Reference: 孜孜不倦，沁人心脾。—— 结合自《尚书·大禹谟》与《诗经·小雅》 Diligently striving without tiring, refreshing the heart and mind. A combination from 'Shangshu·Dayu Mo' and 'Shijing·Xiaoya'.
孜: Diligent and unwavering, never slackening in effort.
沁: It refers to the feeling of comfort and affection one experiences, with an extended meaning of auspiciousness, tranquility in life, and freedom from worries.
Meaning: Diligent and tireless, refreshing and delightful, symbolizing hard work and bringing a refreshing joy.