Because the tale of Tang dynasty as ‘golden age’ is a fairy tale. Either the Tang never existed or they existed during another timeframe.
As German historian Heribert Illig has demonstrated, the time frame between 625 AD and 911 AD is a fake, being invented by Christian monks during the 11th century in order to “prove” that so much territory had been “donated” to the Catholic Church. Illig had applied the formula which Pope Gregory had introduced for the Gregorian Calendar reform in 1582 AD and came to the conclusion, that between 48 BC and 1582 AD 300 years had been redundant. Illig decided that those 300 years perfectly fit into the middle ages which are often called “the dark ages”.
For Germany and France that means, the dynasty of Carolingians has never existed. Emperor Charles the Great is a fiction as well as Charles the Hammer who is claimed having defeated the Muslims in 732 AD at the battle of Tours and Poitiers in Southern France. Has anybody detected the battle ground of Tours and Poitiers? Can anybody explain how the cupola of the chapel of Aachen could have been build in the early days of 9th century while all other churches in Germany had been small and poor buildings made from clay? Is there any archaelogical evidence for things made by “Carolingians”?
For China that means, that the battle of Talas in 751 AD never occured, where Gao Xianzhi, a General from Korean Goguryeo and commander of the Chinese troops is claimed the loss of the battle at river Talas in Transoxania against the Muslim troops of the Abbasides. Remember that the Abbasides had just chasen away the Umayyads from Bagdad after a year long battle. How could they be able to celebrate such a big victory only one year later and 2000 miles away from Bagdad? Has anybody detected the battle ground of Talas?
For Korea that means that the “golden age” of Tongil Shilla never existed. This golden age was claimed by Buddhist monk Il-yeon in his history book Samguk Yusa that he wrote in the 13. century, only to “prove” that so much territory and gold was “donated” to the Korean monasteries. Has anybody seen a archaeological artifact that may be related to the period of “Tongil Shilla”?
For Spain that means, that the “Reconquista” between Christian and Muslim troops could not have lasted for a stunning 770 years (622 AD - 1492 AD). Compared to this battle period, the “100 years war” in France (1337 - 1452) and the “30 years war” in Germany (1618 - 1648) must have been.
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