Avalokitesvara, Padmapani, Guan Yin Pusa, Kwanyin, Quán Tự Tại Bồ Tát - are all the same Avatar. No matter what name is used the key Ideology to remember is - Compassion.
Her name is translated as
"The One Who Hears The Suffering of All" - Guan Yin is beloved throughout all of Asia since Guan Yin brings the Dharma to all Individuals who are trapped by suffering (Samsara); in an unlimited amount of forms.
The Ideology is that an individual must realize that there is no one way - to help someone. But the ability to help someone takes the form of Compassion and comes in many different forms.
Suffering is everywhere and for those who do not know any form of Dharma or of the ideology of Compassion, the cycles of unawakened, repeated suffering are much greater.
Compassion is needed for those who seek the Way of Detachment.
Guan Yin is a reminder for all Individuals to embody the qualities of - Compassion.