The bitmap of real estate area can be made by cdr, ai, ps and other software, and the pictures saved by cdr are higher in definition, which is more suitable for making bitmap of real estate area. On the contrary, the picture quality of ps will be slightly worse than that of cdr. If there are some mistakes in personal production, you still need the help of a professional team. I think the works created by Zhimei are a typical example. I hope my answer is helpful to you!