Although unable to directly command them, one can indeed punish and educate them at will.
And that ring is the manifestation of the "Contract" between both parties, also serving as the tool to apply punishment.
So anyone who wears that ring can directly obtain "Candle Dance's" "parental authority," becoming Candle Dance's father.
It was Shen Lingshuang's mother who, as Shen Lingshuang's soul was being devoured, could not bear her cries of "mother" and broke the ritual, letting Shen Lingshuang's last soul and spirit escape.
Otherwise, Shen Lingshuang would be completely devoured by "Candle Dance," disappearing from the world, and Candle Dance would be completely controlled by the Third Sanctuary, taking turns serving as a daughter to the upper echelons of the Third Sanctuary without any ability to resist.
