The Kindest Knife

Shen Weida marries into the Shen family and is with Shen Xi for years, then cheats with Qin Mo. Shen Xi dies in shock upon learning the truth. Qin Mo mistakes Shen Xi's mother Shen Changning for her mother-in-law. Shen Changning vows revenge, leaving the cheater and his mistress with no escape.