issuing state and "GBD" as the nationality code.) Instead of printing the holder's signature on the identification/observation pages, space is reserved on the last page of the passport below the emergency contact information for the holder to complete his/her signature. Security features Enveloping the top right hand corner of the portrait photograph, and the surname, given names and nationality data sections is a kinegram, consisting of an amalgamation of the Chinese and Hong Kong flags, and the letters "HK香港". In the middle of the identification page is a multiple laser image consisting of two circles: in the left hand circle is another image of the holder's portrait photograph, at the bottom of which is the passport number; in the right hand circle is the Hong Kong regional flag (the red and white reverse gradually as the viewing angle is changed).[21] The Hong Kong permanent identity card number is printed at the bottom right hand side of the portrait photograph as a trapezium shape which gradually widens towards the bottom. The three waves at the bottom of the portrait photograph, as well as the straight line separating the machine readable zone from the rest of the data page and the vertical straight line of the right hand column of Tsing Ma Bridge, contains micro-lettering of the holder's English name, Hong Kong permanent identity card number and date of birth.[21] The background of the identification page changes under ultraviolet light, when a scene of the Tsing Ma Bridge with nighttime fireworks becomes visible. The identification page also contains an engraving of a bauhinia, but with certain lines replaced by microlettering consisting of "HKSAR".[21] Inner pages All the inner pages have seasonal flowers at the side, and different "華" characters in the centre (in English this means "Chinese"). As well as being printed in red at the bottom of each page, the passport number is perforated through the top section of all the odd-numbered pages. At the bottom of each page is a gold outline of the Great Wall of China. The seasonal flower is printed across the middle of even-numbered and odd-numbered pages. When two pages are rolled up such that they meet each other, the seasonal flower on the right margin of odd-numbered page matches up with the flower on the left margin of the even-numbered page (e.g. pages 11 and 14), forming a complete bunch of flowers. The observations page,