What is "tromzikhang"

Tromzikhang ( Tibetan: ཁྲོམ་གཟིགས་ཁང་།; Wylie: khrom gzigs khang), is a historic building in Barkhor, Lhasa in Tibet, China. It is located northwest of Jokhang temple at the corner of the left side of Barkhor Tromshung Jang (street). It was demolished in the 1990s except for the magnificent facade. Today Tromzikhang is a notable market in Lhasa and a housing complex.