Does Jianghu school calligraphy include ink margin?

Not included. "Jianghu Calligraphy" is not a strict concept, let alone an authentic calligraphy "genre", but a vague general term. But Jianghu calligraphy does not include ink margin. Generally speaking, there are five schools of contemporary calligraphy: Post School, Monument School, Monument School, Modern Calligraphy and Postmodernism.