The goal that Ye Yuan set for Lin Lan could not be rated as not high.
From fifth grade to seventh grade, it seemed like a very narrow gap, but it was extremely difficult to cross.
The quality of heavenly pills, third grade, fifth grade, seventh grade, ninth grade, grand completion, each was a hurdler.
Furthermore, the further back, the more difficult it was!
Lin Lan could break through to the fifth grade by relying on the strength of grade two heavenly alchemist.
But further up was something that was extremely arduous.
If seventh grade was so easy to break through, then when Ye Yuan refined the seventh grade Foundation Establishment Heavenly Pill, it would not have caused such a great sensation.
Ye Yuan was able to do it by relying on his foundation that was tempered endlessly, coupled with his extraordinary talent.
But to Lin Lan, it was the biggest test of his life.
Ever since then, Lin Lan cultivated like he had gone mad.