In this week tutorial, as we have already designed and completed some basic targets, supervisor Yan told us some detailed requirement about the project. Firstly, three cures showing the material properties should be sketched in different colors according to the data in the table as the reason that it is not adequate in our GUI window, we just display only one curve. Second, on account of missing basic unit at the end of the axis in the graph, they are emphasized to implement the unit. In addition, the sketched curves could be more precise as they are not smooth enough as it has uncertainty when positioning the relevant point from the table. Professor Yan mentioned the method calling linear fitting, which we have learned before the university, though it is not a very simple issue. In this case, we decide to learn this method linear fitting.