Male or Female?
This is mainly a question of your personal preferences. The points to be considered are that ...

Tatam Ainokainen
Bitch (rough, red)
Lian-Hua-Kai-Zhen Eri-Kiva
Bitch (rough, black)
Females are in general a bit smaller in size and are easier to housebreak, they are ready to mate only twice a year, they tend to show more affection and are less interested in fights. .
Tombo of the China's Joy
Dog (rough, red)
Chowderny Xingling-Shi
Dog (rough, black)
Males are more lion-like in appearance and have a tendancy to go looking for mates all year round;

In any case, a well-socialized and trained pet, no matter the gender, will be a loyal companion !!!