Clavell's novel Shogun is used in courses about Asia and Japan because of its wealth of historical detail about Tokugawa Japan. Does the novel Yang Shen, by James Lande (www.yang-shen.info) have any comperable merit as historical fiction about 19th century China?
It is probably too early to tell. The book has only recently been published, and thus far it seems to have received very few professional or even amateur reviews. The book needs to be read by more readers, and more readers need to make their opinions of it known, before any generalizations can be made about its quality.