高僧傳 6.56

6.56

Huiyuan had a disciple named Huiyao, who also understood the sūtras and vinaya, but was especially skilled in ingenious contrivances. As there was no water clock on the mountain, he fashioned a twelve-petaled lotus in the spring water, which rotated with the flowing ripples to determine the twelve hours, and the shadow of the sun never deviated. He also once constructed a wooden kite that flew for several hundred paces.