Because economists understand earnings as actual material wealth increase, accounting experts think the output value of more than the difference between the input value is profits, there is a contradiction and two kinds of income concept. The specific performance is: In ancient China, the term "sedan" was used to refer to the sedan chair. When western cars entered China in large Numbers, it was the closed square cars that were popular in the west But administrators lost £990 a year compared to full-time employees and the average sales or customer service worker lost £800 a year.