Was Jiang Zuo bluffing?
Of course not. It was simply impossible for anyone else to know about, let alone conceive of, the Celestial God Five Extremes Pill.
Because this pill existed almost purely in theory.
Jiang Zuo had deduced this theory back when he was a Supreme—a theory he'd also developed for his research on Jiu Xi.
But he couldn't put the theory into practice.
In other words, even a Supreme would think the Celestial God Five Extremes Pill was nothing but a fool's dream.
Yes, Jiang Zuo had successfully created this pill before, but only after transcending the Supreme realm.
Setting aside the other ingredients, the Cultivation requirement alone made it impossible for anyone, to say nothing of the required skill in alchemy.
In a world with only a handful of Supremes, the Celestial God Five Extremes Pill was effectively a myth to everyone else.
Jiang Zuo had succeeded, but the Celestial God Five Extremes Pill was ineffective on beings beyond the Supreme realm.
