Not only were the materials for this elixir difficult to find, but refining it was also exceedingly difficult, with a failure rate as high as 99.9%.
Most importantly...
To consume this elixir, one had to refine it themselves. If you consumed a Great Zhenren's Limit-Breaking Pill refined by someone else, not only would it be ineffective, but it would also become a potent poison. This poison could not be cured or neutralized and would gradually corrode the Life Wheel, causing it to collapse and turn to ash.
Now, Xu Qing was going to refine this very elixir.
Of course,
before Xu Qing began refining the Great Zhenren's Limit-Breaking Pill, he first had to perform a necessary upgrade, raising his Great Zhenren's Limit-Breaking Pill Refining Technique to the highest possible level.
[Great Zhenren's Limit-Breaking Pill Refining Technique Level 10: ... (Omitted)]
Now that the technique was at Level 10, the success rate had greatly increased, but it had only reached 10%.
