Another is the detailed blueprint of the Goblin War God Mech.
"Elder, we have only one Goblin War God Mech in our possession. Everyone should take good care of it. Besides, as long as someone can tinker together a second Goblin War God Mech, the rewards from within the alliance will certainly not be small.
For example, say a Second Order Card Master or something of the sort, by then possessing hundreds to thousands of years of lifespan, you will all have plenty of time to further advance in the field of mechanics, and to witness the growth and expansion of our Blazing Plains City."
The words spoken by Gu Ran set the engineers' hearts ablaze. No matter how much they loved the field of mechanics, they couldn't avoid the temptation of a "thousand-year lifespan."
Seeing that he had fully stirred up everyone's enthusiasm, Gu Ran did not say more and strode out of the factory.
...
Upon returning to the square, Gu Ran came to a halt, torn within his heart.