Its a Chinese equivalent of the phantom time theory https://en.wikipedia.org/wiki/Phantom_time_conspiracy_theory
Its just as silly as phantom time and covers almost exactly the same period. The motive is possibly racist which makes it more sinister.
Back in the early 2000's, well before most social media sites existed, I had a coworker who shared with me a number of questionable theories, one of which was basically this. He also believed very passionately that plate tectonics was wrong. Unfortunately social media didn't invent brain worms.
I was going to say that it seems the equivalent of the "Belgium does not exist" meme (ante litteram) from a few decades ago.
Maybe it is healthy for society in the long run to have pockets of divergent belief. Most of the time it is groundless and fades away. Every so often it gains traction. If it is based in reality, we gain a better understanding. If it is misleading, it vitalizes a competing and more correct understanding.
The more interesting phenomenon is that we are able to agree on anything at all, it's not exactly our strongest instinct. Reading through HN, for example, the longest comment chains are a series of disagreements. But we build resources like Wikipedia and science journals, which also use disagreement as an engine for generating a more correct understanding. Its a strange and hopeful aspect of human societies.
Not to be confused with https://en.wikipedia.org/wiki/New_chronology_(Fomenko) which I thought was the same as this but actually compresses a whole lot more time into less than 1000 years and does word magic to imply that King Solomon = Suleiman the Magnificent.
And it's taken about as seriously as "birds don't exist" or "the earth is flat". CNN is just doing straight up orientalism. Exoticizing a normal aspect of a culture that if you think hard enough happens in western cultures just as often if not more
That wikipedia page lists four points speaking against the phantom time conspiracy, and in those four points relies on the Tang dynasty twice. Which doesn't exist. Checkmate /s
The version I've had argued to me didn't change any chronology, they just insisted that the Song dynasty started earlier so the Tang shouldn't be counted.
The context was weird, the person pushing it was very passionate about the subject, and since I certainly don't know all that much about Chinese history from the period, I just smiled and nodded. Apparently this is a bigger thing?