Wiki & Encyclopedia: My Sister-in-law Insists On Changing Marriages And Sending Me To Be Mrs. Hou.

The protagonist, recently reborn. Initially a daughter born to a concubine, her social status is elevated to legitimate daughter during the dispute regarding her marriage.

Qin Yuan's younger sister, known for being manipulative and vain. She attempts to hijack her sister's betrothal to improve her own social standing.

A scholar from a humble background who rises to become a high-ranking official in the cabinet, and Qin Yuan's original fiancé.

Qin Yuan's younger brother, who holds a biased and hostile attitude towards Qin Yuan, favoring his sister Qin Wan.

The legal wife of the Qin family patriarch and mother of Qin Wan. She actively orchestrates schemes to benefit her daughter.

A prestigious noble and military commander who is betrothed to the Qin family, known for his wealth and influence.

A loyal personal maid to Qin Yuan.

A personal maid to Qin Yuan.

The head of the Qin family and an official at the Imperial Academy. He prioritizes family prestige and political alliances over his daughter's well-being.

The Marquis of Dingbei, a battle-hardened and highly decorated general who is deeply trusted by the Emperor.

The matriarch of the Gu family. She seeks a bride from an educated, scholarly family for her grandson to change their family's martial focus.

Qin Yuan's deceased biological mother, who was originally a concubine from a medical lineage.

Qin Yuan's deceased mother. A concubine who left behind rare medical books as a critical part of her daughter's dowry.

Wife of the Sixth Master (Gu Lu), she manages the daily affairs of the Marquis's residence.

Younger brother to Gu Jinghui, frail by nature and does not serve in the military.

A woman brought back from the northern frontier by the Marquis. She claims to have a connection to the Marquis and is viewed as an interloper by Qin Yuan.

The wife of the Marquis' younger brother. She intervened when Madame Zhao attempted to cause a scene on the wedding night.

The Marquis's personal attendant, tasked with managing his daily affairs and belongings.

Also known as the Sixth Master, he is the younger brother of Gu Jinghui.

The younger brother of Marquis Gu Dingbei. He has several children and manages household affairs alongside his wife, Madame Xu.

The young son of Madame Zhao. Marquis Gu treats him as an adopted son (foster child).

A senior and loyal servant attending to Old Madame Gu.

A senior female figure in the Gu household, likely a long-time member of the family with her own assets and influence.

A maidservant in the Gu household who observes the positive rapport between the new Marchioness and the Old Madame.

The husband of Qin Yuan, also known as the Marquis. He is currently occupied with military and internal household matters, leading to his neglect of his new wife.

The head steward of the Marquis's Mansion, responsible for overseeing household staff and managing the residence's general administration alongside Madame Xu.

A young girl allegedly fathered by the Marquis, used by Madame Zhao as a tool to gain the Marquis' attention.

A noble lady residing in the Marquis' mansion, often cited by servants as a standard for expected behavior.

The Seventh Lady of the Gu family. Indolent, arrogant, and disrespectful to the new Marchioness, she uses her status to inconvenience Qin Yuan.

A manipulative and corrupt steward at the Marquis' Mansion who attempts to bully Qin Yuan with excuses about household rules.

The matriarch of the Marquis' Mansion. She supports Qin Yuan and strictly punishes incompetence, even towards the Marquis himself.

Qin Yuan's husband, who is currently being disciplined by the Old Madame for his perceived incompetence and lack of attention to his household duties.

A self-centered resident of the Marquis' Mansion who feels entitled to use the Marquis' wife's resources for her own leisure.

Lin Ziqi's mother, known for being difficult to get along with and a strain on Qin Wan.

The son of the Second Cousin-in-law, currently studying for the imperial examinations.

A relative of the Qin family who attended the homecoming banquet. She is caught in the crossfire of the tension between the two sisters.

An elder of the extended Qin family who is uncomfortable witnessing the discord between Qin Yuan and Qin Wan at the banquet.

An attendant in the Marquis's mansion, subordinate to Gu Shiliu and tasked with supporting the Marquis's daily needs.

A physician from Renhe Hall with a discreet reputation. He is trusted enough to treat the Marquis privately for injuries.

The younger brother of the Marquis. He lives within the estate and manages household affairs alongside his wife, Madame Xu.

A clever and sharp young servant girl selected from the estate to serve in the Marquis' mansion.

A concubine of the Sixth Master, mentioned in the context of the Sixth Master's domestic instability.

The head manager appointed by Madam Cui to oversee Qin Yuan's dowry shops. He is initially deceptive regarding shop accounts but is intimidated by Qin Yuan's sharp oversight.

A shop manager under Qin Yuan's dowry businesses. He appears more observant than his peers and keeps track of market trends, such as the increasing scarcity of pepper imports.

The shrewd and polished manager of the 'Ranxiang Ju' spice shop. He is well-regarded for his extensive network and business acumen.

A high-ranking royal prince known for his refined appearance and cultured demeanor. In his youth, he suffers from a mysterious, weakening illness, and is seeking a rare, complex medicinal incense to aid his sleep and mental clarity.

A cook in the Old Madame's private kitchen, highly regarded for her ability to prepare the Marquis's favorite dishes.

A servant in the Marquis's mansion responsible for overseeing repairs and maintenance duties.

A concubine originally from the south. She is known for her cleverness and skilled needlework, a fact that irritates Madame Xu.

A social acquaintance and former friend of Qin Yuan.