'Mò bǎo' literally combines 'mò' (ink) and 'bǎo' (treasure), referring specifically to a highly valued piece of Chinese calligraphy — often created by a renowned master or bearing historical significance. Unlike ordinary calligraphic works, a 'mò bǎo' carries cultural weight, aesthetic excellence, and sometimes even spiritual resonance; it is treated with reverence, frequently displayed in scholarly settings, private collections, or ancestral halls.

The term evokes tradition, refinement, and connoisseurship. It is commonly used when praising someone’s handwriting, describing an heirloom scroll, or referring to a treasured artwork donated to a museum or temple. While 'mò' alone means ink and 'bǎo' can mean any precious object, together they form a fixed, honorific compound reserved exclusively for exceptional calligraphic pieces — never for paintings, seals, or printed text.