It didn't work for me. The Google Play did not install, instead the red exclamation mark shows up, when I click it, it says file corrupted or something like that.
However I have installed google play manually (found the link somewhere at apkmirror, maybe it was the same as suggested above), it still didn't work with the rh-01 error and after clearing cache and data from Play store, google play services and some other google service which I don't remember now and I don't have the phone at hand, and then restarting, play store finally started to work (it asked for gmail password at the beginning)...

I go back to Flyme 5.1.6G (the last version with play services in) but I can't access my account. Finally I upgraded to 5.1.11G and I will wait for the new version of Flyme, no one of Google apps neither Flyme can use my Google account for instance Whatsapp can't do a backup in Google Drive. The last option is to reset the phone, reinstall all the apps and all the data but I am not sure it will work