Foundation Establishment Pill is a mighty pill that was acquired by Meng Hao from Ding Xin's bag of holding, after killing him. Ding Xin got the pill from his master, who had made it himself. It was a huge stroke of luck for Meng Hao, because even in a great Sect in Southern Domain, this pill was not easy to acquire. The requirements were just too high, because two of the medicinal plants required to concoct the pill only grew in the Three Danger Zones in the Southern Domain.