After I Seduced the Crown Prince of an Enemy Kingdom

After transmigrating and becoming a prince, Song Qinghe originally planned to live a carefree life and keep his head down, absolutely refusing to get involved in the struggle for the throne. Unfortunately, his country was too weak. To seek the protection of a powerful state, his father sent him to Qi as a hostage. In Qi, Song Qinghe wanted to live as comfortably as possible, so he set his sights on Crown Prince Yu. But Crown Prince Yu was cold and unfeeling, and extremely difficult to please. Song Qinghe had no choice but to resort to such tactics as cooking delicious food with his own hands, playing the zither, giving him scented sachets and poems, and pretending to be afraid of the dark so he could insist on sleeping with him and successfully move into the Crown Prince's residence. After living in comfort in Qi for seven years, his father fell gravely ill, and Song Qinghe was summoned home. Crown Prince Yu came to see him off. With his long brows, phoenix eyes, and handsome, strong build, he looked indifferent, but there was a hint of reluctance beneath the surface. Song Qinghe wept as he clasped his hand. "Brother Yu, I'll think of you every day." But the moment he got into the carriage, he started cheering: I'm free, yay! From then on, he forgot all about Crown Prince Yu. In Qi, Crown Prince Yu waited for a letter from Song Qinghe, but not a single one ever arrived: ... Very well, you little liar. When his father died, Song Qinghe was somehow pushed onto the throne. But before three months had passed, an urgent military report arrived from the border: Qi had mobilized five hundred thousand troops and was massing at the frontier, declaring that either Song Qinghe marry Crown Prince Yu and become his crown princess, or Song would be destroyed. The court officials were so furious their faces turned red and their necks bulged. They cursed Crown Prince Yu for going too far and all volunteered to fight. Remembering Crown Prince Yu, who stood nine chi tall and was imposing and robust in every way, Song Qinghe couldn't help regretting it. If I abdicate now, is it still in time? QAQ A delicate, coy, super-duper gorgeous shou X a cold, cool-guy gong who dotes on his wife like crazy (except in bed) and turns dark later 1v1 HE~ This novel is also titled "I, the Emperor, Shall Be the Mother of All Under Heaven" Theme: Devoted to one person from beginning to end