Literature Reference: 或啸或讴吟，谁知此闲味。—— 《张常侍池凉夜闲䜩赠诸公》 Sometimes whistling, sometimes singing, who knows this leisurely taste? Source from 'Zhang Changshi Chi Liang Ye Xian Yan Zeng Zhu Gong'.
讴:
Singing and praising. Grand and majestic, auspicious, symbolizing joy.
吟: Moaning and sighing, leaning against a tree, he chanted. — "Zhuangzi: The Fullness of Virtue"
Meaning: Singing and reciting poetry, expressing inner emotions and leisurely charm.