The "retro style" actually came from the print advertisement of the Hayashi Department Store in the "Taiwan Railway Travel Case" published in 1942.

In order to pay tribute to the designers of the year, Zheng Zhongxin's designers decided to use this design as a blueprint and reinterpret the design, embellishing Tainan City Bird (Pleasant Carp) and City Flower (Phoenix Flower), symmetry and double into Correct.