the costume looks different from joseon era because goryeo era was still influenced by chinese culture at that time. Just like moon lovers, the costumes are in goryeo era too.
What's the name of bailu manager and IS she competent ?
Her manager name is Ma Shu Jie ( if I'm not wrong ), and her assistant name is He Han Dan ( HeHe ), they are best friend and they've been friends since Bailu hasn't became an actress