The flashing neon lights in the late 1990s s represented the prosperity of the city at that time, and the landscape was just lit up. People felt fresh about the flashing, rotating and lined lamp groups. In recent years, with the emergence of various lighting methods in the city, building lighting can be varied, and everyone is not very interested in the previous single lighting methods such as neon arches. From the overall trend, the lighting that citizens need now is simple and natural, matching the environment and architecture. As for the reason why the neon arch is dim, an industry insider who has been engaged in landscape lighting for many years believes that on the one hand, the maintenance cost of neon lights is relatively high, and The Light Group at that time was different from the lighting of the sky curtain and LED screen at present, there is no advertising benefit, and it is also a problem to maintain a large amount of electricity bills. In addition, it is more because people's aesthetic and demand for landscape lighting has changed. Due to the high energy consumption of neon lights, and the disadvantages of life and safety, since the 2007 s, the landscape lighting in Nanjing has gradually changed into LED lights. At present, more than 95 landscape lighting in Nanjing has been replaced with LED lights.