Cantong qi Zhixu 陳致虛 (1290-ca. 1368) is entitled "Zhouyi cantong qi zhujie" 周易參同契注解 (Commentary and Explication of the "Cantong qi") and dates from ca. 1330. His text is ultimately based on Peng Xiao’s redaction, but contains about four dozen readings that are not documented in earlier extant works (Pregadio 2012:148-56). With the exception of Zhu Xi’s work, all extant commentaries to the "Cantong qi" written through the Yuan period (1279-1368) are related to the Taoist alchemical traditions. During the Ming (1368–1644) and the Qing (1644-1912) dynasties, the "Cantong qi" continued to exert its prestige on Neidan, but its influence also extended to
What Love Is Made Of three minutes and fifty-five seconds (3:55), "What Love Is Made Of" is an uptempo dance and house track that has been described as "rave-y" and "trance-y". Its instrumentation contains the sounds of pianos and synthesizers. Jordan Sargent of "Spin" observed that it continued the musical style first introduced in Katy's 2012 extended play (EP), "Danger EP", which was "straight-forward house". Idolator's Sam Lansky compared her performance in the song to recording artist Siobhán Donaghy. Critical response to "What Love Is Made Of" was generally positive: most critics noted Katy's vocal performance and commended its sound. Siân Rowe from "NME" was