I live in China so below is an outline of some of my charges using a CapOne Visa:

Date RMB Charge (US$) CapOne Exchange Rate XE.com Rate
5/23/2006 ￥90.45 $11.31 7.99734748 8.0175
5/24/2006 ￥356.90 $44.60 8.002242152 8.0177
5/27/2006 ￥265.00 $33.12 8.001207729 8.025