The synthesis of buildings first emerged alongside the [Artifact Refining Room], and Ji Yuan thought to grasp it in one go for an instant upgrade.
Unexpectedly, the panel indicated that the synthesis could only occur when [Artifact Refining Room], [Alchemy Room], [Talisman Room], and [Array Room] were of the same level.
Back then, Ji Yuan's artifact refining skills were insufficient to support upgrading the [Artifact Refining Room] to Level 2, so he had no choice but to give up.
It wasn't until later, in pursuit of upgrading the [Spiritual Energy Cannon] to secure a life-saving measure, that Ji Yuan painstakingly pushed his artifact refining skill to Tier Two.
With the [Spiritual Energy Cannon] upgraded to Level 2, it almost reached the attack power at the peak of the Golden Core.
Such a delightful event caused Ji Yuan to forget about upgrading the [Artifact Refining Room], let alone any thought of building synthesis.
Now that he remembered, it seemed like an opportunity.
