The Tathagata was completely demonized, and Lingshan became a radiation source of "Buddha poison". Chanting sutras, chanting Buddha's name, and using Buddha's power will accelerate the spread of pollution.
Xuanzang (the reincarnation of Jin Chanzi) went against the current to deliver sutras. The "Sutra" he carried was not a physical book, but the last and purest "faith and will" gathered by all sentient beings in the East before they were completely contaminated, and it was sealed in a special jade box. This is the key "antidote" to purifying Lingshan.