Bixi

Bixi, or Bi Xi (Wade–Giles: Pi-hsi), is a figure from Chinese mythology. One of the 9 sons of the Dragon King, he is depicted as a dragon with the shell of a turtle. Stone sculptures of Bixi have been used in Chinese culture for centuries as a decorative plinth for commemorative steles and tablets, particularly in the funerary complexes of its later emperors and to commemorate important events, such as an imperial visit or the anniversary of a World War II victory. They are also used at the bases of bridges and archways. Sculptures of Bixi are traditionally rubbed for good luck, which can cause conservation issues. They can be found throughout East Asia in Japan, Korea, Vietnam, Mongolia, and even the Russian Far East.

The tradition of tortoise-mounted stelae originated no later than early 3rd century (late Han dynasty). According to the 1957 survey by Chêng Tê-k'un (鄭徳坤), the earliest extant tortoise-borne stele is thought to be the one at the tomb of Fan Min (樊敏), in Lushan County, Ya'an, Sichuan. Victor Segalen had earlier identified the stele as a Han dynasty monument; present-day authors agree, usually giving it the date of 205 AD. The stele has a rounded top with a dragon design in low relief - a precursor to the "two intertwined dragons" design that was very common on such steles even in the Ming and Qing Dynasties, over a thousand years later.

In the collection of the Nanjing Museum there is a hunping funerary jar, dating to 272 AD, with a miniature architectural composition on top, depicting, among other objects, a tortoise carrying a stele erected by the Jin dynasty governor of Changsha in honor of a local dignitary.

Perhaps the best known extant early example of the genre is the set of four stele-bearing tortoises at the mausoleum of Xiao Xiu (475-518), who was the younger brother of the first Liang dynasty emperor Wu (Xiao Yan), near Nanjing.