Is the algorithm accurate when it meets leap month?

This algorithm generally only needs to be delayed for one month in the case of leap month, and its accuracy is not elegant. This algorithm has no scientific basis. Now is the age of science. If you believe in science, you can go to the Baixin Medical Center of Xianggang for a blood test with high accuracy. When I went to the test before, the doctor promised to get a full refund if it was not allowed, but here is the accuracy rate of 99%