Living in different countries means the risk of currency conversion loss. and now I found my impact on current during a discussion with friends.
When I first moved to Hong Kong, the value of HK dollar started to fall versus RMB;
Then I moved the U.S., the value of US dollar started to fall too;
and I went to U.K. thinking of making some pound in order to make up the loss, the pound fell as well;
Now my friends asked where I am going next. "That's a top business secret". I said.
A trading opportunity for "short", definitely.