Zhang Lang's bet was not easy to achieve: reaching the third level of the Thirty-Three Heavens Tower within a year. Those who could accomplish such a feat would generally be qualified to erect a monument in the Late Stage.
If Lin Zhen were a Three Flowers Warrior or even a Longevity Warrior, Zhang Lang would not have made this request.
He wasn't just shooting in the dark; he had watched Lin Zhen's battle videos.
In his opinion, Lin Zhen was able to enter the Holy Land thanks to three ultimate moves.
One was the Destructive God Thunder used to defeat Heigu. However, Zhang Lang had a sharp eye and noticed that the Destructive God Thunder needed a long time to incubate. Since Lin Zhen had just used it, it would be impossible for him to cultivate it again within a year.