"Besides that, it's best to prepare a Foundation Establishment Pill as well."

"A Foundation Establishment Pill will make breaking through the bottleneck much smoother and increase your chances. Especially when your spiritual power is lacking or your preparations aren't thorough enough, a good pill can make all the difference."

"For example, if you use a low-grade Foundation Establishment Pill, it can help stabilize your spiritual power and prevent it from running wild, boosting your success rate by twenty to thirty percent. But because the impurities haven't been fully removed and the medicinal properties aren't pure enough, when you're breaking through, you'll feel the spiritual power being forcibly shoved upward by brute force rather than flowing naturally."

"A mid-grade Foundation Establishment Pill is much better. The medicinal power flows more smoothly, providing a steady stream of spiritual power during the breakthrough and raising your chances to fifty or sixty percent."