A nickname from some people for Los Angeles Lakers Superstar LeBron James due to his support of China, which could possibly be the most evil country in the world, although not everyone there is bad.
That guy is from America but has complete support of China instead of his own country, he's such a LeChina James!
When a coworker, casual friend, or neighbor cannot get the hint that they are not wanted nor bring anything to the table. They then exhibit leechiness but still coming around often.