Having advanced to level ten, Zhang Tie did not wallow in his achievements. Instead, he continued to shore up his strength.
Following Heller's advice, during his cultivation after reaching level ten, he should first eat the Iron Fetus Fruits. That would raise his body's ability to withstand damage to a new height.
Back when Zhang Tie trained in the Crystal Battle Fortress, obtaining a single Iron Fetus Fruit required him to endure at least seven days of beatings. Yet after he fell into the hands of the Sainer Family, only a few days of brutal torture had hung five Iron Fetus Fruits on Little Tree. This showed just how cruel that torment had been.
Take Zhang Tie's leg, for instance. The bones in it had been crushed inch by inch with instruments of torture. That pain had truly been like hell—simply beyond what a human being could endure. And beyond that, there had been whippings over his scalded skin and all manner of torture. Any one of them could have driven a person completely mad.
In such torture, even a real piece of iron could have been refined away, yet Zhang Tie had endured it.
Having endured it, he could naturally taste the fruit gained after suffering that hellish agony. For the sake of those fruits, Zhang Tie felt he ought to be grateful to Little Tree. It had ensured that everything he suffered was not merely suffering; it had let him see hope even in despair, allowing him to persist and walk out of that prison cell.
It took Zhang Tie two days to digest those five Iron Fetus Fruits.
Just as a qualitative change occurred once the number of lit bright points reached a certain threshold, the accumulation from all the Iron Fetus Fruits he had previously eaten