Taijitu during the Qing period for their possible connection with Zhou Dunyi's "taijitu". Ming period author Lai Zhide (1525–1604) simplified the "taijitu" to a design of two interlocking spirals. In the Ming era, the combination of the two interlocking spirals of the "taijitu" with two black-and-white dots superimposed on them became identified with the "He tu" or "Yellow River diagram" (河圖). This version was reported in Western literature of the late 19th century as the "Great Monad", and has been widely popularised in Western popular culture as the "yin-yang symbol" since the 1960s. The contemporary Chinese term for the modern symbol
Yang Yin and establishing Northern Qi. Emperor Wenxuan made Yang Yin his prime minister and created him the Duke of Huashan, and during Emperor Wenxuan's reign, Yang served capably, finding appropriate officials for the key posts. Therefore, although Emperor Wenxuan, particularly late in his reign, turned violent and wasteful, the imperial government nevertheless functioned effectively. Yang was praised for remembering those who had helped him in the past, repaying them greatly, but not bearing grudges against those who had tried to hurt him. With Emperor Wenxuan, in his late years, accustomed to killing people for entertainment while he was drunk, Yang thought