大集經之說處也。在欲色二界之中間。大集經一曰：「以佛功德威神力故，於欲色二界中間出大坊庭，猶如三千大千世界。（中略）爾時世尊至寶坊中昇師子座。」同五曰：「爾時世尊，故在欲色二界中間大寶坊中師子座上，與諸大眾圍繞說法。」
The "great precious region" described in the 大集 sutra as situated between the world of desire and the world of form.
The place between the desire-world and the form-world where Buddha expounded the 大集經.