Time          TRip                                      bed or seat                            price                  class    train or bus

8  h            beijing -   harbin                   seat                       270 rmb               fast train

14 h           haerbin manzhouli                   seat                    120  rmb              slow train - third class

7 h            zabaikal - chita                        seat                    650 RB               mini bus

13 h         chita - slyudentka                      bed                    650 RB              plaskart  train

2h            slyudentka - irkustk                    seat                   100  RB            mini bus

17 h        irkustk - krasnoyark                     bed                   690  RB            platskart  train

12 h        krasnoyark   - tomsk                    bed                  531 RB             plastkart   train

15h        tomsk  - omsk                             bed                    730 RB             plastkart  train

11 h        omsk - yekaterimbourg                 bed                  660 RB             plastkart train

14 h       yekaterimbourg - kazan                 bed                    1650 RB            Kupe  train

13 h         kazan  - moscow                         bed                     600 RB            platskart train

 Conclusion :   Beijing - Moscow took me  148  hours (6 jours complets) and cost me 209  euros. I spent 8 nights in the train