He Gu

古 河

The number one alchemist in the Jia Ma Empire, a sixth-grade alchemist, known as the "King of Pills". [Spoiler] Later, he was promoted to a seventh-grade advanced alchemist and Dou Zong. When he first appeared, he served as an honorary elder of the Yunlan Sect. After the destruction of the Yunlan Sect, he joined the Yan Alliance. [/Spoiler] (Source: Baidu Baike, translated)