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Because the Buddhist Holy Land, the Western Paradise Sacred Mountain, had become a pile of ruins. Pavilions, towers, pagodas, and temples were all destroyed. What drove Tathagata absolutely mad was the resentment and vital energy that permeated the whole Western Paradise. The majestic Spiritual Mount was now virtually indistinguishable from the Ghost Domain. This was the stronghold of Buddhism, the sacred site of all Buddhist disciples, and it was in ruins. Restoring its former state would take at least a thousand years. Moreover, this was a humiliation that made it hard for Buddhism to hold its head high. He had led troops to sneak-attack someone else's stronghold, only to have his own stronghold destroyed in a surprise attack.