The established years are supported by archaeology and various other means to determine the dates. Recorded history is only 1 of them. China has a lackluster oral tradition whereby history is passed down from mouth to mouth(like Indian civillization).
There is nothing debatable, which is why i've stated the differences between the Chinese and Western perspective, which is either 4087 years old(Chinese) or 3617 years old(Western)
and BTW, Babylonian civ. is the world's Oldest civ.- not Indus. The Fertile Cresent is where humans started living in fixed structures. google this yourself.