Don't just see that Heng Jun had more unique grade pills than Gong Yangxue. In reality, among the top 4 pills, Heng Jun's Huang Jade Pill was considered the easiest to concoct. The difficulty of the other pills all exceeded the Huang Jade Pill in difficulty. So, it went to say that the array had been very fair in the scoring.
By the time the top 50 of the second round were announced, Hu Zhenyu got news of Mo Wuji's origins.
Mo Wuji: Cultivator from Yong Ying Immortal Domain, accompanied Murong Xiangyu to Sharphorn Immortal Ruins. At Sharphorn Immortal Ruins’ Pill Dao Immortal Alliance Branch, Mo Wuji entered the Pill Dao Pagoda and participated in the assessment. Then, in a matter of days, he went from an unknown pill refiner to a Honored Grade Tier 4 Pill King.