Chinese Peacekeepers patrol the world

According to The Washington Post:

"China is now the 13th-largest contributor of U.N. peacekeepers, providing 1,648 troops, police and military observers to 10 nations...."

It has even "offered to send 1,000 peacekeepers to southern Lebanon to help enforce a cease-fire between Israel and Hezbollah. The United Nations accepted less than half."

I wonder the UN didn't take want to take them all.