I am not an adherent to any of these missing time theories, but did get interested in the idea awhile back when watching a documentary about ancient Rome. It seemed like the same details were being repeated over and over, like the same story repeated many times. Of course there are many reasons for that, so please do not get defensive.

Anyway, can you cite the specific evidence for eg chinese eclipses and their associated dates? Wikipedia cites this page which has that awful scholarship I've found is typical of chronology discussions: http://www.uwgb.edu/dutchs/PSEUDOSC/Phantom%20Time.HTM