Chuanyue Meiren Zai Zuo Yao

Wu Ling transmigrated into the novel she was reading and became the wife of the lord of Dongling Castle, ready to conquer the harem and win the lord's heart? No, no, no, she just wants to get back home to her smartphone! Supposedly she can open a portal home with the lord's thumb ring from his coronation ceremony. She'll have to use all her wits to find the ring, stay inconspicuous, and fend off the lord and his other concubines. But for some reason the lord started to actively pursue her instead?
(Source: Tencent, translated)