Yi Song

A young girl pretends to be the deceased granddaughter of an ailing grandmother soon to celebrate her birthday. The aged woman does not know her granddaughter has died; thinking she has only left, and the young girl, with her remarkable resemblance, is asked by the family to accompany the grandmother in her last days; posing as her granddaughter in order to cheer her up for her anniversary.

Gao Bingzhu, wrongly accused, teams up with Baili Hongyi to investigate his father's poisoning and Wu Siyue's case. Despite class differences and initial clashes, they uncover a sinister conspiracy that could destroy the city. (imdb)

The drama tells a story where Ning Yi, a matrilocal son-in-law of a cloth merchant, embarks on a journey in Wu Dynasty and helps his wife, Su Tan'er, run family business and finally become the richest in Jiangning. (imdb)