It was difficult to obtain battle merits on the Realm Battlefield.
To open secret realms for advanced Emperors of Gods, one needed a lot of battle merits. Under normal circumstances, it would take hundreds of years for an advanced Emperor of Gods to accumulate enough merits to do so.
However, Duan Ling Tian was an exception. It was easy for him to accumulate battle merits since he was strong enough to kill ordinary Supreme Gods and obtain their battle merits. Despite being an advanced Emperor of Gods, his speed of accumulating battle merits was much faster than that of an ordinary intermediate Supreme God.
