▁Eastern ▁Z hou ▁period . ▁The ▁succession ▁of ▁dynast ies ▁was ▁incorpor ated ▁into ▁the ▁B am bo o ▁Ann als ▁and ▁the ▁Records ▁of ▁the ▁Grand ▁Histor ian , ▁and ▁became ▁the ▁official ▁position ▁of ▁imperial ▁histor i ography ▁and ▁ide ology . ▁Some ▁sch ol ars ▁consider ▁the ▁X ia ▁dynast y ▁myth ical , ▁or ▁at ▁least ▁un subst anti ated , ▁while ▁others ▁identify ▁it ▁with ▁the ▁arch ae ological ▁Er lit ou ▁culture . ▁ ▁According ▁to ▁the ▁traditional ▁chron ology ▁based ▁upon ▁calculations ▁by ▁Li u ▁X in , ▁the ▁X ia ▁ruled ▁between ▁ 2 2 0 5 ▁and ▁ 1 7 6 6 ▁BC ; ▁according ▁to ▁the ▁chron ology ▁based ▁upon ▁the ▁B am bo o ▁Ann als , ▁it ▁ruled ▁between ▁ 1 9 8 9 ▁and ▁ 1 5 5 8 ▁BC . ▁The ▁X ia – Sh ang – Z hou ▁Chron ology ▁Project , ▁commission ed ▁by ▁the ▁Chinese ▁government ▁in ▁ 1 9 9 6 , ▁concluded ▁that ▁the ▁X ia ▁existed ▁between ▁ 2 0 7 0 ▁and ▁ 1 6 0 0 ▁BC . ▁ ▁Trad itional ▁accounts ▁The ▁X ia ▁dynast y ▁was ▁described ▁in ▁classic ▁texts ▁such ▁as ▁the ▁Classic ▁of ▁History ▁( Sh uj ing ), ▁the ▁B am bo o ▁Ann als , ▁and ▁the ▁Records ▁of ▁the ▁Grand ▁Histor ian ▁( Sh iji ) ▁by ▁S ima ▁Q ian . ▁ ▁According ▁to ▁tradition , ▁the ▁Hu ax ia ▁were ▁the ▁ancest