Spirit Sacrifice Formation

Song Wen hid at the bottom of the lake. Seeing Zhou Siyi fly overhead, he made no move.

Only after Zhou Siyi had left for an hour, and he saw no one following her, did Song Wen quietly set off in pursuit.

In less than fifteen minutes, Song Wen caught up with Zhou Siyi. The two traveled together, steering their flying boat toward Forgotten World Ridge.

"Junior Brother, did you catch the venomous flood dragon?" Zhou Siyi asked.

Song Wen patted a spirit beast pouch at his waist and replied.

"I caught it. I also used it to test the Blood Demon Pill."

"How effective is the pill?" Zhou Siyi asked.

"It was more potent than I expected. But it contains extremely strong toxicity, so I cannot take it," Song Wen said.

"None of the spirit herbs used in the refining are toxic, yet the pill produced contains deadly poison. It should be caused by conflicting medicinal properties among certain spirit herbs," Zhou Siyi said, though she did not sound entirely certain.

"That should be it. I sensed it while refining the pill—the proportions in the pill formula were wrong. The fact that I managed to condense a pill at all was largely due to luck," Song Wen said.

"To resolve the issue with the formula's proportions, there is no other way but to try them one by one and alter each spirit herb. But this pill involves more than fifty kinds of spirit herbs. With the amount of spirit herbs you currently have, I fear it will not be enough for more than fifty attempts," Zhou Siyi said.

"Since I was able to condense a pill, the issue should lie only with one of the supplementary herbs. I plan to start with the supplementary herbs whose effects are weakest,"