First, so far, there is only one person named Watergate in Huo Ying. Namikaze Minato, the fourth generation, has nothing to do with zero (PN). This is what I said n+ 1 times.
Second, not six cycles, but seven pairs of cycles. I've said this n+ 1 time on Baidu, so I'm too lazy to explain it.
Third, Nagato is not equal to PN.