"That's right, Master, aren't energy capsules generally filled with energy stones? What's the benefit of using low-grade crystals for better ones, and using high-grade crystals?" Mu Xue asked curiously.

"Using energy stones, it doesn't matter for ordinary flying. In battle, the energy flow will be much slower. Using low-grade spar, the speed will be increased and power will be increased. Using high-grade spar, the power will be very strong and stable, and will not cause wear and tear on the energy capsule, etc. Impact, for example, energy stones can fly ten miles in one second, low-grade crystals can fly fifty miles, and high-grade crystals can travel more than a thousand miles. The gap is huge, otherwise we would not be able to reach the Liuao Star Realm in a month."

"This..." Patriarch Chu seemed to understand something: "Brother, the arrival you mentioned means crossing the Liuao Star Realm and reaching the other side?"