The ancient Heavenly Court was jointly established by the ten Great Celestial Lords. However, after the ancient war, the ten Great Celestial Lords either perished or disappeared, leaving only four Great Celestial Lords.
Now, even the four Great Celestial Lords didn't do anything. No one had seen the four Great Celestial Lords appear for countless years.
And the Heavenly Court had ten Great Immortal Emperors under the four Great Celestial Lords, who held great power in the Heavenly Court. However, they were also constantly in closed-door cultivation, trying to break through to become a Celestial Lord. They would only appear on essential matters that concerned the survival of the Heaven Realm. Common issues would not be enough for them to appear.
The last time ten Great Celestial Lords appeared was a thousand years ago.
And under those Immortal Emperors who basically didn't do anything, are Immortal Kings who truly held great power.