Why is Shanghai national tax so easy to test?

Shanghai's national tax exam is so good because there are few people involved. According to relevant public information, 202 1, the number of applicants of Shanghai State Taxation Bureau is 16425, and the number of recruits is 148, with an average competition ratio of 65. The number of applicants of Beijing State Taxation Bureau is 4 1363, the position is 155, the number of recruits is 4 14, and the average competition ratio is 1 18.