I can log-in into e-Cas as of Nov 5th but my wife (Principal Applicant) still can't log-in yet.
I can see DM but Permanent Residence Status is: Not Available (That means our files has not been arrived in Beijing yet??)
Yep. It means Beijing either doesn't have the file yet or, at least, hasn't opened it and begun processing yet.
Do we have the same Client ID ? Do we see different infos if she log-in ?
No, you both will have different client ID numbers. From what I have read, client ID numbers are for use by offices within Canada. You may have to wait to be able to log into your wife's e-CAS until Beijing sends you their Acknowledgement of Receipt letter with her file number, telling you they have her file and have begun processing it. Then you should be able to use her file number from Beijing to access her e-CAS.
Edit: Of course, it technically could also just mean that maybe they HAVE opened her file but haven't gotten around to updating e-CAS yet. You never really know for sure. In any case, you probably just have to wait a little longer before you can see her PR app's progress in your own e-CAS.