This book is an amazing collection of designs by Seo Won-seon & Lee In-gyeong, which show their approach to intermediate level designs. The models offer a great challenge of both your technical an artistic skills. The book was previously available only in Korean but I had the opportunity to translate into English on behalf of Colortree Ltd. This was far from straight-forward, since software translation from Korean is far from perfect and  I had to re-write maybe 80% of it. The passages where the authors explained their philosophy was particularly problematic and required several queries to the authors.