Ask for the name of an ancient female protagonist novel

There was a plot in the novel that the female protagonist had a cousin who married a noble. After giving birth to a child, her health was very poor and she wanted to find a sister at home to be her second wife. The female protagonist stopped the idea of the eldest sister. There was a sister who wanted to murder the eldest sister and marry her brother-in-law. The eldest sister finally regained her courage and recovered her health. There was also another detail. When the eldest sister first chose the second wife among her younger sisters, she asked them to choose flowers to judge. There was another detail. The child of his eldest sister would cry when he was hugged by his eldest sister. Only when he was hugged by his stepsister who wanted to marry his brother-in-law would he not cry.

Answer 1

An example of the name of the female protagonist's novel was as follows:

Dream of the Qing Dynasty-Qing Yumeng

The novel told the story of a modern girl who traveled to the Qing Dynasty and became the concubine of Emperor Kangxi. She used her intelligence and kindness to move Emperor Kangxi and finally won his favor and respect. The plot of the novel was complicated and the characters were vivid. It was a very popular female protagonist novel.