It is Red Nanjing cigarettes.

1. Look at the trademark on the cigarette box. The contrast in printing quality is obvious. The concave and convex marks on the fake cigarettes do not match the trademark pattern.

2. Look at the number 168 on the cigarette. The writing on the real cigarette is clear and delicate, like a steel seal; the fake cigarette is blurry and the number appears thicker and more obvious!

3. Look at the glue marks on the cigarette boxes. The genuine cigarette boxes are glued by machine, and the glue marks are straight lines or dots; the fake cigarette boxes are manually glued, and the glue marks are messy.

4. Look at the shredded tobacco. The shredded tobacco is dense and neat, with shear marks on the tail. The shredded tobacco is loose, and the shredded tobacco falls off when shaken on the mouth. It seems that the shredded tobacco is filled.

5. Take a closer look at the shredded tobacco. Real tobacco is golden in color, uniform in size, and free of impurities; fake tobacco is dull in color, with a lot of fine powder and stems as hard as toothpicks!

6. Look at the filter. There is a row of uniform laser-drilled holes on the real cigarette, while the fake cigarette has small printed dots.