The design made in these days has a major mistake. Our team starts writing from a fine function module, and only considered the use of software runtime, without considering the software initial, and the use case when leaving. This leads to a lot of actual cases. The result has become a number of functional cases, and it is very local to see problems. It lacks some cases, and even some objects that have never been seen. During this period, many types of works, especially the extraction of event flow descriptions and objects, and some basic classes will have a big change! Many work doing is not used. Fortunately, it is already aware, and I also gave us a lot of experience!