A blue city means that the whole city is blue. If a city is full of blue, it means that the city is full of blue flowers, or it is permeated in the blue ocean. Cities may appear on large cruise ships, and they will form blue cities because they are surrounded by blue oceans.

In recent years, sapphire is very popular, and many makeup and costumes have added sapphire elements, which is a kind of blue that shines brightly in the current fashion circle. It can be seen that sapphire is favored by more and more people. Royal blue and white is very noble, so it is also very popular with many ladies.

The word "Allure" means very beautiful, because his beauty has reached the level that ordinary people can reach, which makes the whole city fall for him, cheer for him and appreciate her beauty. No one can look better than her. So the whole city is used to describe a person as the whole city, which means he is very beautiful, very beautiful.