Common-used method is to draw line plot, aimed at simplifying seismic reflection and emphasizing underground reflection structures.

I always put on topics like a painting like before, again to draw line, until the entire picture comes out slowly. This need long-term peaceful and continuous meditation.

With the line wheel pattern each line drawn on another piece of paper or folded paper, the folded model opened or separated with a pencil or other appropriate tools to draw line traces.