Sacrifice (2010) on Netflix

Plot summary

In the ancient duchy of Jin, the Zhao clan has held power for generations, its influence reaching as far as the Duke. General Tu'an Gu moves against them, killing the Duke and laying the blame on the Zhaos so that the whole clan can be executed. The only survivor is Zhao Wu, the infant son of General Zhao Shuo and Lady Zhuang, the Duke's sister. Lady Zhuang begs Han Jue, a subordinate of Tu'an Gu, to spare the child, and the physician Cheng Ying carries the baby to Gongsun Chujiu, a friend of the family. Learning the boy is gone, Tu'an Gu seals the city gates and gathers every newborn, certain that whoever hides the Zhao heir will refuse to give him up. Cheng Ying brings the child home to his wife and their own baby.