When cultivating immortality can be explained by natural sciences such as classical mechanics, high-energy physics, quantum mechanics, mathematics...
Eh! Mr. Hawking, you can object if you object, but it would be rude to jump out of a wheelchair and hit me!
Mr. Newton, are you uncomfortable lying in the coffin? What are you doing by lifting the coffin boards?
Mr. Einstein, please stop sticking your tongue out at me!
This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.