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 sun ④ in relief ⑤ open; overt ⑥ belonging to this world ⑦ [linguistics] masculine ⑧ south side of a hill ⑨ north bank of a river The compound "yin-yang" 陰陽 or 阴阳 means "yin and yang; opposites; ancient Chinese astronomy; occult arts; astrologer; geomancer; etc.". The sinologist Rolf Stein etymologically translates Chinese "yin" 陰 "shady side (of a mountain)" and "yang" 陽 "sunny side (of a mountain)" with the uncommon English geographic terms "ubac" "shady side of a mountain" and "adret" "sunny side of a mountain" (which are of French origin)... Many Chinese place names or toponyms contain the