The Hostage Princess and Crown Prince

Princess Yan Xiwan of Qi was sent to Chu as a hostage. She and Crown Prince Li Qian of Chu fell in love in the deep palace. Yan Liuyan, the eldest legitimate princess of Qi, tried to take Li Qian, sparking a marriage dispute. Li Qian resolved to protect Xiwan and brought her into the Eastern Palace as his side consort. Unwilling to be trapped, Xiwan dug a tunnel and fled. When war broke out between Qi and Chu, Yan Liuyan was sacrificed. Xiwan faked her death and escaped. After ascending the throne, Li Qian searched for her for years. He finally found her, confessed his love and made her empress against all opposition. Old grievances faded. They stayed devoted to each other, had dragon-phoenix twins, and left a touching tale of imperial love.