Legendary Lady Cheng is Obsession of Prince Ming
Prince Zhao Ming spent four years fighting on the northern frontier. When he returned home, the crown was on his younger brother's head. The great war hero, feared by his political rivals and plagued by insomnia, grows more and more isolated, while the imperial court waits for him to fall.
Xuan Cheng, the eldest daughter of the newly promoted Duke Ying, has no interest in court politics. She has been forced to hide her talents and opinions, far away from her family and ignored by those who should care for her.
During an imperial hunt, Prince Zhao Ming is led away from the destination; an assassination attempt is made against him. He ends up underwater, deep into the river; he finds a relic from the ancient world. It turns out to be from his ancestor ten generations ago. However, the relic captured him, sucking his essence.
He is miraculously saved. But the impact was too big – his demonic qi was unsealed, leaving him vulnerable. If he doesn't control it, cultivating death would be a good thing to happen.
Enemies are countless; the saviour is one, and he must find this person and make him a strong ally. Unaware of the changes in his body, he deems them as side-effects of migraines and war-wound relapses.
And the only person who can cure his meridians and treat his crippling migraine. That is Lady Du.
And Xuan Cheng is the closest clue Prince Ming has in finding Lady Du.