Immortal Doctor From Ancient Times

What're the hidden secrets back in 2000 years ago from the Qin Dynasty? Can we stay young for real? A cold and mysterious man with long silver hair, and his apprentice who never speaks, run a pharmacy called Plover House, in a corner of the prosperous and bustling city. A curious and cheerful girl called Lora broke into their life one day, but she had no idea that she was involved in a long-brewing plan lasted for over a millennium...