Here are some articles about it:
North Korea’s Kim Jong Il arrives in China, amid internal, external tensions
Washington Post
Lauren Keane
5/4/2010
Kim Jong-il Arrives in China
New York Times
Choe Sang-hun
5/3/2010
North Korean leader in China seeking cash, clout
Los Angeles Times
Barbara Demick and John M. Glionna
5/3/2010
North Korea’s Kim seeks lifeline in China
Reuters
Royston Chan
5/3/2010
Kim Jong-il Stops Off in Chinese Boomtown
Choson Ilbo
5/5/2010
Who Is with Kim Jong-il on His China Trip?
Choson Ilbo
5/4/2010
North Korea’s Kim ‘visits China’
BBC
5/3/2010
We were there ourselves too in Dalian the Beijing …www.pcvltd.com by happenstance.