An ancient Russian Urban Legend, typically described in children's stories as a hairless white humanoid with short bony limbs and thin drapes of pale grey hair hanging from its head.
It is said than an Yilin has a ear-shrieking voice that will cause one to commit suicide within a week.
Yilin are said to be found in caves surrounded with pink rocks, and those who seek to find them either come back with nothing or do not come back at all.
Those children who seek for valor, ants and high singing voices shall find no respite.
It is then that Yilin comes for you in your safe Haven in your light.