Ji-an Kwon’s “Systemized Language: Humming” exhibition at Paris Koh Fine Arts in Fort Lee includes mixed-media works such as, from left, “Humming_NY01,” “Humming_NY06” and “Humming_NY11.” Ji-an Kwon, the K-pop star also known as Solbi, has had her fair share of controversy. In her current exhibition — “Systemized Language: Humming,” at Paris Koh Fine Arts in Fort Lee — she takes her critics head-on. When she branched out from music into the visual arts a decade ago, critics questioned her artistic abilities, baiting her with remarks such as “can you draw an apple?” More recently, there was the…