羊腸鳥道 曲折山路 / yáng cháng niǎo dào qū zhē shān lù /
A Narrow, Winding Path;
Twists and turns of a mountain trail.
Category:
One Stroke Calligraphy_Phrases 一筆字：佛教成語
References:
星雲大師全集【書法類】佛教成語 The Complete Works of Venerable Master Hsing Yun: Calligraphy-Phrases
