"Coffin nail..."
Mo Hua ran to the front of the bronze coffin, remembering the position measured by Zhang Quan, and indeed found a small groove at the edge of the coffin lid.
The groove was closed.
One must insert a bronze coffin nail to open the bronze coffin.
Inside the groove, Formation Patterns were carved, but since it was closed, the patterns were hidden, so Mo Hua hadn't noticed them at first.
How to open it?
Ordinary coffin nails are used to seal wooden coffins.
But this bronze coffin, contrary to typical practice, uses coffin nails to open the coffin.
This coffin nail is the key.
Lu Chengyun should have one in his possession.
And it seems that Zhang Quan also has one.
Mo Hua furrowed his brow.
Lu Chengyun was suspicious by nature; he would definitely not keep two keys for something as important as the Corpse King's coffin.
The key in Zhang Quan's hands must have been kept secretly by him.
Mo Hua surveyed the bronze coffin once more.
