The pharmacist known as "Old Wei" escaped with a newly developed secret medicine. His master was furious and ordered a thousand-mile pursuit.
Mr. Wei hid and fled at the same time. On the way to escape, he picked up an abandoned child, taught him the principles and raised him up.
A few years later, Mr. Wei was no longer around and the secret medicine was missing, but the legend of the secret medicine was still circulating in the world.
What is the secret medicine and what is its use?
Is this a conspiracy or a wrestling match?