42.2cm
16½"
16½"
41.7cm
16½"
16½"
Approximate Measurements
Artwork Panel: 31.7cm x 32.2cm ≈ 12½" x 12¾"
Silk/Brocade Border: 41.7cm x 42.2cm ≈ 16½" x 16½"
This painting features a man playing an 
(er hu), a 2-string traditional Chinese alto-violin. This kind of fiddle is used in virtually all Peking Opera performances to match the high-pitched singing that is also ubiquitous with this genre.
The title suggests that this man is a huge fan of Peking Opera.
This painting comes from a series by the artist that depict life in old Beijing (old Peking). While Beijing has left a lot of the past behind with its new skyscrapers and demolition of the old alleyways and quadrangle houses, if you know where to look, you can still find many of these scenes in real life, even today.
This painting is titled, as noted above, signed by the artist, and authenticated with his red signature seal.
The artist's name is 
(Bo Yang). He was born in 1957, Hebei Province (the province that surrounds Beijing). He moved to Beijing city many years ago, and has a small studio there.
He has become a famous Chinese folk art painter. Much of his artwork is exported to Hong Kong, Taiwan, and Japan. You'll also find his work in galleries and museums in China.
Bo Yang started his "Scenes of Old Beijing Life" paintings as a means of survival. Decades ago, he was just a street artist. After a few years, his paintings became so popular, and many people claimed to "discover" him, that he now has a huge international following.
Bo Yang uses traditional black Chinese ink and various brush widths to create his work. The medium is handmade xuan paper (often called rice paper, though there's no rice in it). When I took these painting to my workshop, they were mounted with a copper-colored silk brocade border. This border can be used in lieu of matting when you frame this artwork.