A glass vase about a foot high is preserved at Nara in Japan, and is alleged to have been placed there in the 8th century.
Thus, for the Nara Dai-butsu, the mould was constructed in a series of steps ascending 12 in.
The sculptures attributed to Jocho, the founder of the Nara school, although powerful in pose and masterly in execution, lack the truth of observation seen in some of the earlier and later masterpieces.
The first historical period of glyptic art in Japan reaches from the end of the 6th to the end of the 12th century, culminating in, the work of the great Nara sculptors, Unkei and Period, his pupil Kwaikei.
The great Nara school of sculpture in wood was founded in the early part of the 11th century by a sculptor of Imperial descent named JOchO, who is said to have modelled his style upon that of the Chinese wood-carvers of the Tang dynasty; his traditions were maintained by descendants and followers down to the beginning of the 13th century.
The colossal Nara Daibutsu (Vairocana) at Tdai-ji, cast in 749 by a workman of Korean descent, is the largest of the great bronzes in Japan, but ranks far below the Yakushi-ji image in artistic qualities.