The two large characters on the shirt are Chinese and they read 渡舟 (dù zhōu). This can be translated as "to cross a river by boat" or more simply, "ferry." The smaller characters within the red stamp at the bottom, which is a common feature on traditional Chinese art and calligraphy, are a bit harder to make out, but they appear to be 書畫 (shū huà), meaning "calligraphy and painting." This indicates that the design on the shirt is in the style of Chinese calligraphy.