Excuse me, is Liu Junpo's calligraphy collectible?

Liu Junpo reveals a pure and upright spirit between the lines, and Su Dongpo's poems can be summarized as "dignified and elegant, vigorous and graceful". Both Junpo Bamboo Slips and Junpo Li, whose fonts are named after individuals, are listed in the national font library, and calligraphy works are compiled into supplementary teaching materials for primary and secondary schools in the form of illustrations. Very collectible!