Weird Cultivation of Immortality: Thousands of Dharmas Begin from Me

Spiritual roots still need to be planted under the skin, alchemy cultivators also use humans as medicine, animal cultivators still blend humans and animals, and gods still lie on human heads to suck blood... This is an era when immortal magic has not yet become famous. Everything has just begun and is still developing. My name is Chen Yun, I am a doctor, and I have a Tianyan book that can deduce all things and get answers. I found that studying medicine cannot save this era. So I decided to become an immortal and become a true immortal!