As part of our series looking at China, we're talking about the trade and investment wrapped up in the Olympic Winter Games in Beijing — and why some Canadian entrepreneurs say China is still a land of opportunity despite human rights concerns and diplomatic tensions. Matt Galloway talks to Constantine Karayannopoulos, CEO of Neo Performance Materials, which operates several rare earth processing plants in China; Margaret McCuaig-Johnston, a senior fellow at the China Institute at the University of Alberta; and Sarah Kutulakos, executive director of the Canada China Business Council.