In Tang and Song Dynasty (960–1279 CE), the love-based knot is a unique element as evidenced in many of the poem, novel, and painting. For example, in the memoir "Dongjing Meng Hua Lu" written by Meng Yuanlao noticed that in the traditional wedding custom, a Concentric knot (Chinese: 同心结 ) or the knot made like a Concentric knot was necessary to be held by the bride and groom. Other ancient poems mentioned the Concentric knot to portray love such as Luo Binwang's poem: "Knot the ribbon as the Concentric knot, interlock the love as the clothes" (Chinese: 同心结缕带，连理织成衣)"." Huang Tingjian‘s poem: "We had a time knotting together, loving as the ribbon tied" (Chinese: 曾共结，合欢罗带). The most famous poem about the love knot was written by Meng Jiao Knotting love (Chinese: 结爱).