(Mainichi Japan) December 24, 2010 China's boycott diplomacy ugly but effective 木語：外交力で「大使は不在」＝金子秀敏 ＜ｍｏｋｕ−ｇｏ＞Mainichi Shimbun staff writer Mayumi Otani, who covered the Nobel Prize award ceremony this year, angri…