The full title of this sutra is Prajna-paramita Heart Sutra of which Prajna-paramita is a Sanskrit term. Prajna means wisdom, paramita means perfection; accordingly, Prajna-paramita means "the perfection of Wisdom". This sutra is more briefly named the Heart Sutra. It is called the "Heart" in as much as it subsumes the essence of the Perfection of Wisdom of the Buddha. It is the best known Mahayana sutra, and, at 260 words, it is also the shortest.

In order to reflect the profound wisdom of the Heart Sutra and to impose the two-dimensional calligraphy into a three-dimensional architecture naturally, the thirty-eight timber columns with inscription of the Heart Sutra have been arranged to correspond to the topography of the landscape, and in a figure-of-eight configuration (i.e. the symbol of infinty "��") symbolising infinity. The column located at the highest point of the hill is left blank to suggest the concept of "emptiness" (Sunyata), a key theme in the Heart Sutra.

Professor Jao Tsung-I completed this calligraphy of Heart Sutra in 2002, and dedicated it to the people of Hong Kong in June the same year. The work is now presented in the form of a large-scale wood inscription display in an outdoor environment. The calligraphy has been carved on to wooden columns reminiscent of bamboo tiles (zhujian) used for writing in ancient times.