Taijitu the Tibetan designs have three or four swirls (representing the Three Jewels or the Four Noble Truths, i.e. as a triskele and a tetraskelion design), Lai Zhide's taijitu has two swirls, terminating in a central circle. The Ming-era design of the taijitu of two interlocking spirals has been reported as "yin-yang symbol" in the first half of the 20th century. The flag of South Korea, originally introduced as the flag of Joseon era Korea in 1882, shows this symbol in red and blue. This was a modernisation of the older (early 19th century) form of the Bat Quai Do used
Yin and Yang (Fish albums) which was also released as a lead single. All new tracks were mixed and produced by James Cassidy, who had previously worked on "Songs from the Mirror" and Suits. The outside cover, a relatively simple concept based on the yin and yang symbol (with each element in the shape of a fish) surrounded by a circular Celtic knot pattern, was again designed by permanent Fish collaborator Mark Wilkinson. The "Yin" version of the cover has a black symbol on a white/greyish background, the "Yang" version has a white symbol against a dark-red/black background. (On the Radio Edits CD cover, the