After getting married, the protagonist's salary comes under her in-laws' control. Her mother-in-law secretly misuses her husband's income and even forges IOUs in an attempt to claim their property, while her husband constantly tries to smooth things over. Trapped in a web of schemes, she refuses to cry or argue. Instead, she quietly gathers all the evidence, including bank transfers, chat records, and IOUs, then calmly plans her negotiations, exposing her in-laws' schemes step by step. Rather than relying on arguments, she uses evidence to protect her property and establish clear family boundaries. Focusing on financial self-protection within marriage, the story reminds women that they should never keep giving in. By preserving records and defending their rights rationally, they can protect the money they worked hard to earn, along with their confidence and dignity.