I Really Only Have One Wife

Shen Fu really has only one wife.
She is a bank clerk, ordinary and unspectacular, yet is uniquely favored.
She adores traditional culture, mastering the arts of the zither, chess, calligraphy, and painting.
She declares herself a gourmet, dreaming of eating without paying and still making a profit.
She is a bookworm, nicknamed "the heartless exam machine," addicted to certification exams.
She is an authoritarian CEO, always saying to Shen Fu, "Can't you stop writing novels? I'll support you."
This book features a sole female protagonist, really just one wife!