This Hong Kong 20 Dollar banknote was issued in January 2013 by the Standard Chartered Bank. The front design of the note uses the same mythological creatures from the fronts of the preceding series but the back design features new unique vignettes to highlight the Chinese heritage and technology through inventions. Printed on its obverse side is a mythological carp fish jumping out of the water along with the bank logo pattern in underprint and numeric 20 in SPARK. The reverse side features an ancient calculating tool known as the abacus, it was mainly used in China during the ancient centuries before the adoption of the written Arabic numeral system, and the binary code. The note measures 144 x 72 mm and is equipped with a Magenta-to-gold windowed security thread with demetalized HK20 to enhance its security features. A watermark image of a Bauhinia blakeana flower and electrotype 20 on a pixelated background is also made visible under a UV light.