Those sketches were inspired from the marks that made by human. I have a habit to draw down the marks on my sketchbook from I have anywhere I have seen in life. I believe that is the way to record human activity. Therefore, I create those abstract sketches by using several materials, Acrylic, watercolor, color pencil, and pastel. Each piece was been painted layer by layer. A group of marks covers another group of marks. Especially, the first piece has my fingerprint under the marks, which also transparency between human work and art. There are also marks from tables, walls, woods, and glasses. I think the pieces bring a peaceful and dramatic mood to the audience. Especially, it reminds the people about the life marks, every step we made is meaningful. I think that’s a good “art therapy” at the subway while people passing by.