"Ten portions of Immortal Essence Gold?"
This price alarmed Shang Zhenbei.
Immortal Essence Gold!
That was the key material for forming an Immortal Golden Body.
The price for one portion often reached tens of millions of taels.
It was close to the annual revenue surplus of a Lower State.
In other words, the produce revenue of an entire state for one year was only worth one portion of Immortal Essence Gold.
Of course, the calculation couldn't be done this way.
After all, there were many ways to obtain Immortal Essence Gold, and if there were a gold mine, the cost could be greatly reduced.
After deducting various other costs, the price could even drop to one million taels per portion.
But...
Ten portions of Immortal Essence Gold for one heavy cannon!
That still was an extremely high figure.
All the Immortal Essence Gold in the entire imperial family's collection probably couldn't be exchanged for a hundred or two hundred Sword Heavy Cannons.
