Enso zen circle style . Sumi e design . Black gray overlap color . Red circular stamp with kanji calligraphy ( Chinese . Japanese ) alphabet translation meaning zen . Gray gradient background . Vector Shutterstock .eps vector - Enso zen circle style . Sumi e design . Black gray overlap color . Red circular stamp with kanji calligraphy ( Chinese . Japanese ) alphabet translation meaning zen . Gray gradient background . Vector - ID: 1192264324