Ever since entering the Hell difficulty, Lin Zhen had been spending each day amidst failure and challenges.
In the first month, Lin Zhen's best performance was only achieving 15% progress.
However, a month later, Lin Zhen's main body had completely absorbed the first round of Mysterious Iron Essence and was ready for the second round of absorption.
This time, the cost of the Mysterious Iron Essence was 8 billion Sanjiang coins, which wasn't too much for Lin Zhen to handle.
After absorbing this Mysterious Iron Essence, Lin Zhen's realm had another breakthrough, reaching the mid-phase of Meteor Level Eight.
Spending money wasn't a big deal now, but Lin Zhen knew that once he advanced to the Comet Stage, his expenses would skyrocket.
After leveling up, Lin Zhen once again challenged the zombie siege in Hell mode, and after a month of trying, he reached 32% progress.
Then, he spent 16 billion to buy Mysterious Iron Essence, advanced to Meteor Level Nine, and challenged it again!