Transportation~~

My partner and I chose transportation as our topic. As we know, transportation concludes many branches which evolute year by year. It is not a difficult topic, however, it is not easy to chose a perfect way to name them by categories. For example, we thought of time lines, electronic lines, evolution lines, and distance lines.
Finally, after discussing, we decided to make them to different categories, on the land, in the water, and in the sky. So the problem is solved. The next step was much easier and the progress goes quickly.
It is my first time to make a project like this. There may be some other problems in the following days, but I am prepared to face to difficulties. Just do it!