The Yorkinese is not a pure-blooded canine.
It is a cross in between the Pekingese and the Yorkie.
It is also called the Yorkingese.
The very best method to identify the personality of a mixed breed is to search for all types in the cross and understand you can get any mix of any of the attributes discovered in either type.
Not all of these designer hybrid canines being reproduced are 50% purebred to 50% pure-blooded. It is really typical for breeders to reproduce multi-generation crosses.
Mixed or Designer Dog Breed Registries
ACHC = American Canine Hybrid Club
DDKC = Designer Dogs Kennel Club
DRA = Dog Registry of America, Inc.
DBR = Designer Breed Registry