Ming Dynasty Chinese jade.

Erotic carvings gradually appeared in Chinese jade and ivory. An eye-witness in the Ming Dynasty described such things from the Ming Palace "The two Happy Buddhas were carved out of two huge pieces of flawless jade. With their sex organs in close contact they gave the viewers the basic concept of the man woman relationship. The eunuch in charge told me that these jade figures were actually left behind in the palace by the Mongols after their downfall. He also said that they had been used by the Mongol imperial family to enlighten their descendants about the facts of life. It is believed that after our empire had been established, these figures continued to be used for the same purpose during the reign of our first few emperors. However, I cannot help congratulating myself secretly for having the good luck to see these finished products of artistic perfection."