If it were easy to get this person to rise to the rank of the empress, Ade would have already sent a message to his secretary to organize everything. Unfortunately, the moment they found out that he had bonded with an omega, it would open the gates of hell and several nobles would send their daughters and sons to run for the empress's office.
The nobles never accepted a hybrid as their empress, even if Mu Liang would receive an honorary position and shared with the late empress, he would not be the empress in full power.
Things would be different if Ade actually bonded with omega and could have children of her own, the man in his arms would be placed as an Honored Concubine and held a high office, but he would never be empress.
At the moment, Ade after bonding couldn't understand the grandfather and father who had more than one mate at the same time, he couldn't bear to think of having anyone other than his omega with him.