Columbia U. Press published this in 2001, but it is new to me. The authoress gives an in-depth account of the "Chinese Transformation of Avalokitesvara" as the sub-title says. Many miracle tales from canonical & native sutras are give. Much coverage is give to the male to female change in the iconography of Avalokita. Not finished it yet, but Ms Chun writes a worthy study.
One should refrain from biased judgments and doubting in fathoming the Buddha and the Dharma of the Buddhas. Even though a dharma may be extremely difficult to believe, one should nonetheless maintain faith in it. Nagarjuna