Stele Inscriptions
The nation of Great Yan has gone to great measures to gather the knowledge contained within. This trove is invaluable.
If allowed to spread across the world, every individual will be able to emulate them and usher in an age of order and prosperity.
However, the Aggeloid invasion has laid waste to everything. Measures were taken to safeguard the gathered knowledge for the future.
Once the war ends and swords can be reforged into plowshares, solve these mechanisms and return the three lights to reveal the secret trove.
May our posterity witness our work, put it to good use, carry on our legacy, and live up to the dreams of this great enterprise.