Silent Heart of Chu

Su Wan was forced by her half-sister Liu Wei to marry the Chu King Xiao Che in her place. Feigning muteness to survive, she accidentally conceives his child and flees with her mad mother to protect them both. Four years later, her twins' resemblance to Xiao Che exposes their location, and Liu Wei repeatedly tries to kill them—only for Xiao Che to save them each time. He knew about the switch from the start and has been protecting her all along. When Liu Wei's conspiracy is exposed, Xiao Che gives up his power and takes Su Wan and their children to a small town, opening a medicine shop and finally finding peace.