Land appraisers, real estate appraisers and real estate agents are all about land. The difficulties are real estate agent, land appraiser and real estate appraiser in turn. My tutors all took the land appraisers, and the real estate appraisers all said they were too busy to take the exams. The most useful is also the real estate appraiser. I come from Jiangsu. Our teacher said that there will be 0/00 students in Jiangsu this year. In some remote places, only one or two people can pass at a time, which shows the difficulty. In the 1990s, if you had a real estate appraiser's certificate, you could earn millions a year in Shenzhen. But now there are many, not so valuable. However, just hanging a certificate can still earn one or two thousand yuan a month (not working, just hanging a certificate), and my tutor can earn about two million yuan a year when doing projects. Therefore, everything is still up to you. Don't listen to others saying that so-and-so is not good. It is no problem to have the ability to earn millions a year.
These exams require certain professional qualifications (necessary real estate-related majors) and work experience. I forgot the details. You can check it in official website.