Under the powerful effect of Dan fire, the two jelly-like lumps of Spiritual Liquid slowly began to become active. Guided by Lin Yi's Piano-refining Alchemy Technique, they started fusing together.
This fusion was total. Without the effect of Dan fire, the two lumps of Spiritual Liquid could also merge, but that would be merely a superficial merger. It would require further cultivation to coagulate into a pill in a normal Cultivator's way.
However, unlike now, the effect of Dan fire intimately melds these two lumps of Spiritual Liquid together.
After a while, once the two lumps of Spiritual Liquid had fully merged, Lin Yi added two more lumps. Just as he predicted, fusing Spiritual Liquid carried no risk or difficulty.
Once the four lumps of Spiritual Liquid had completely fused, he promptly activated Minor Blessing State. He created a circle of Spiritual Liquid around him to prevent any explosive release of Wind-Thunder Element from injuring his Dantian in case of failure.