Which episode of ipartment is Zhang Wei as a bridesmaid?

Season 2 episode 17. According to the query of ipartment, in episode 17 of the second season, Zhang Wei met his former bride: Xiaoli and her boyfriend Hadron. Soon after, Xiaoli sent a wedding invitation and invited Zhang Wei to attend the wedding with a check to express her apologies. However, Zhang Wei resolutely refused the invitation and inspection. At Xiaoli's insistence, Yifei agreed to replace Zhang Wei as a bridesmaid.