A small flycatcher that breeds in western China and winters farther south in Southeast Asia. It is a rare passage migrant and winter visitor in Hong Kong.
Adult males have bright-blue upperparts; the forecrown and lesser coverts can look shining blue in good light. The lores and chin are black. An orange breast wedge usually stops short of the chin, with a whitish belly and brownish flanks.
Most Hong Kong records, including the only two birds seen on multiple dates, have come from forest in the New Territories.
An extinction-risk assessment has not been added yet.