pen , work of art . 鋼筆 ，藝術作品。

Joe Fenton

The amazing five metre fine artwork that took 10 months of working 10 hours per day to produce (and he did it all with a pen) | Mail Online
http://www.dailymail.co.uk/news/article-2036230/The-amazing-metre-fine-artwork-took-10-months-working-10-hours-day-produce-did-pen.html