Vice President Joe Biden enjoyed a relaxing weekend on the golf course in the Hamptons ahead of his visit to China. Biden was seen on Saturday morning playing a foursome at the exclusive Atlantic Golf Club in Bridgehampton. A witness said the veep was relaxed, “laughing and having a great time.” Biden and wife Jill returned for a summer break in Southampton, having also spent Memorial Day weekend there. They are said to be again staying with tech entrepreneur David Bohnett and partner Tom Gregory at their fancy First Neck Lane estate, which is “lined with security,” say neighbors. Reps for Biden, who leaves for Beijing today, declined to comment.