You don't need to write, it mainly reflects what you are responsible for in the original company. Presided over or participated in important projects, extra points. Writing the monthly salary of the original company actually implies the risk of low price in your heart. I suggest you don't need to mark it on your resume. When HR informs you to go for an interview, you will be asked to fill in the information form, and generally you are required to fill in the original monthly salary.