Yup, pretty much everyone is correct. It's used to describe an ungrateful person (ingrate). Other similar Chinese phrases would be 忘恩负义 or 过河拆桥.

I'm so unhelpful right now that I feel bad.. :(

Oh gosh I can't read Chinese....

I can't read Chinese xD I'm useless in this situation xD

I think it means like a person does something really nice for another person but the other person 'betrays' them.

LOL I guess I learned something new in Chinese today :3

An ungrateful person. Erm... something like 忘恩负义 ^^

Ungrateful person - usually indicating that one has betrayed another's trust and disregarded their kindness in bringing them misfortune despite the latter treating them well

ugh! i'm chinese but i don't understand it or can read it...but i guess it means heartless person??? lol. idk anymore...hope that helped a bit. :)

It means ungrateful person. If you translate it, literally it would be White-eyed Wolf, but that's a description for an ungrateful person. If their eyes have too much whiteness and a bad person is typically described as a wolf.

Its actually used to describe an ungrateful or heartless person :)

a heartless person. Or cruel and heartless person. I think... Well it's something along this line! hopefullt this kinda helps~

white wolf?

It kind of means ungrateful, heartless, evil

... but it is white eyed wolf