True Chinese elm is fine for bow wood. Siberian elm (which is commonly called "Chinese elm" in some parts of the US,) is not-it's weak and brittle wood. Real Chinese elm is planted a lot in landscapes and usually has flaky, peeling bark and really small leaves. The wood is fairly heavy and dense. Siberian elm was planted a lot throughout the midwest and northern states as a windbreak, shade tree, etc. It is basically a giant weed.