the first part of the Tang Dynasty in China (618–907 A.D.), and in Germany by Dr. Strockerus in about 1528. Evidence of a dental amalgam first appears in the Tang Dynasty medical text Hsin Hsiu Pen Tsao written by Su Kung in 659, manufactured from tin and silver. Historical records hint that the use of amalgams may date even earlier in the Tang Dynasty. It was during the Ming Dynasty that the composition of an early dental amalgam was first published, and a text written by Liu Wen Taiin 1505 states that it consists of "100 shares of mercury, 45 shares of silver and 900 shares of tin." Diabolo: Chinese archaeologists theorize that Chinese Diabolos (or Chinese yo-yo) originated from Chinese spinning top. In Hemudu Excavation, wooden tops were excavated. In order to extend the spinning time of the tops, whip were used to spin the top. This released a sound and gradually evolved into the term "Kongzhu" ( ). It was speculated that the Chinese poet Cao Zhi in the Three Kingdoms period had composed the poem "Rhapsody of Diabolos 《空竹赋》", making it the first record of Diabolo in Chinese history. The authenticity of the poem "Rhapsody of Diabolos 《空竹赋》" however required further research and evidence of proof. By the medieval Tang dynasty, Chinese Diabolo became widespread as a form of toy. The Taiwanese scholar Wu Shengda 吳盛達 however argued that records of Chinese Diabolo only appeared during late Ming dynasty Wanli period, with its details well recorded in the book Dijing Jingwulue, referring to Diabolos as "Kong Zhong" ( ). Diabolos evolved from the Chinese yo-yo, which was originally standardized in the 12th century. The first mention of a diabolo in the Western World was made by a missionary, Father Amiot, in Beijing in 1792 during Lord Macartney's ambassadorship, after which examples were brought to Europe, as was the sheng (eventually adapted to the harmonica and accordion). Dominoes: The Ming Dynasty (1368–1644) writer Xie Zhaozhe (1567–1624) initiated the legend that dominoes were first presented to the imperial court in 1112. However, the oldest confirmed written mention of dominoes in China comes from the Former Events in Wulin (i.e. the capital Hangzhou) written by the Yuan Dynasty (1271–1368) author Zhou Mi (1232–1298), who listed "pupai" (gambling plaques or dominoes) as well as dice as items sold by peddlers during the reign of Emperor Xiaozong of Song (r. 1162–1189). Andrew