Passed CCSP last Monday (12/04). Since I could not take the test in Shanghai, I had to go to Japan. I spent two and half hours to answer questions and half hour to review. For me its a good test, not easy or not very difficult. The CISSP knowledge is helpful for passing exams. I used following prep materials for about 2 months.
1.CCSP (ISC)2 Certified Cloud Security Professional Official Study Guide（10/10 ） Very relevant to the exam， online Bonus Exam （450 questions）is good
2.The Official (ISC)2 Guide to the CCSP CBK, 2nd Edition （7/10 ） Fragmented information
3.CCSP Certified Cloud Security Professional All-in-One Exam Guide（6/10 ） Total Tester practice exam software is good（303 questions），relevant to the exam
4.NIST，ISO，CSA Related documents （6/10 ） Necessary supplementary materials
There are currently only 8 certified CCSPs in mainland China (as of 10/16/2017) and I hope I can become one of the top 15 people.