```
Time flew by, and a week had passed.
That evening,
with the help of the Revitalization Pill, Lin Zichen successfully achieved Second-stage Skin Tempering Great Accomplishment as he had wished.
His body became invulnerable to blades and spears, and he could withstand close-range AK gunfire, comparable to the Golden Bell Shield described in martial arts novels.
In light of this, Lin Zichen didn't indulge in self-satisfaction but continued to diligently refine himself.
The next day, he immediately began Second-stage Flesh Tempering.
He didn't go to the research institute and spent the entire day in his dorm room refining his body.
He refined himself for an entire day.
He consumed four Revitalization Pills.
And ultimately, he achieved a 5% progress.
5% progress in one day.
As long as he maintained this refining efficiency, he would only need to refine for another 19 days to achieve Second-stage Flesh Tempering Great Accomplishment.
