Childhood friends + sworn enemies + marriage before love + both leads are devoted to each other
(The Heir of the Prince of Zhenbei x the Daughter of a Military Family)!
When Shen Zhiwei was five, she pushed Xiao Heng into the lotus pond in the imperial garden.
> Ten years later, they met again at a palace banquet, and she crushed his priceless jade pendant underfoot.
> Three years after that, an imperial decree arranged their marriage: Xiao Heng, heir to the Prince of Zhenbei, would wed Shen Zhiwei, the Duke of Jingguo’s legitimate daughter.
> On their wedding night, he gripped her chin and sneered, “Are you sure you can keep your place as the heir’s wife?”
> She splashed the nuptial wine in his face. “I’m definitely sleeping in your bed, Your Highness.”
> Later, when enemy forces laid siege to the city, he fought his way back to the manor, his battle robes soaked in blood, only to find her standing atop the city wall, her red clothes whipping in the wind. “Xiao Heng, the women of my Shen family have never been the sort to sit around waiting to die.”
> When sworn enemies become true loves, the capital finally realizes that the pair who are forever trying to tear the roof off each other’s houses have joined forces to turn half the empire upside down.
Not bad, haven't finished watching it yet