As for the cost of increasing the Body Refining Level, it's not an issue at all.
The process of enhancing the Body Refining Level can bring attribute enhancement, so the cost here is essentially increasing one's own strength.
But raising the Star Vein Level is different; it's an ever-increasing expenditure.
The cost to open the second Star Vein Slot is 500 sacrificial power, the third is 1000 sacrificial power... By the seventh Star Vein, the cost reaches 16000 sacrificial power, and it increases the more you advance.
So the greatest expense for players of the Star Vein Combination faction isn't the Body Refining Level, but the Star Vein Level.
With a Level 3 Body Refining, managing three main Life Souls should be sufficient for the early stage, but the Star Vein Level gets increasingly expensive the higher it goes. This is the allure of the Star Vein combination gameplay, and Monster Stream players shouldn't mislead newcomers.
