There's a conspiracy theory called the phantom time hypothesis that years 600-900 were skipped so certain emperors could rule in year M(1000) https://en.m.wiki

There's a conspiracy theory called the phantom time hypothesis that years 600-900 were skipped so certain emperors could rule in year M(1000) https://en.m.wikipedia.org/wiki/Phantom_time_hypothesis https://en.m.wikipedia.org/wiki/Phantom_time_hypothesis