34cm x 28cm. The core text features Hu Shi’s most celebrated quatrain, The Forty-Seventh Birthday Poem: "Selling medicine and wandering for twenty-two years, rumored among mortals to be a minor immortal. Now turning back toward the human realm, only after cleansing Penglai shall I ascend to heaven." Brushed in December 1937 amidst national turmoil, the poem reflects on his twenty-two years of intellectual leadership, serving as a personal manifesto to leave the ivory tower ("Penglai") for national salvation. Clearly signed and sealed by Hu Shi, the running-regular script (Xingkai) is lean, firm, and elegant. These balanced strokes perfectly embody the scholar's lifelong spirit of reason and restraint, standing as a living monument to the modern Chinese intelligentsia.