Bali Yun did not even leave the den to get a drink of water until August 25, four days after Hua Mei's birth, and she was only gone for five minutes. Her brief absence did allow a good camera view of the cub, however. Researchers learned a great deal from observations of Bai Yun before, during, and after the birth and studied details of behavior from videotapes recorded in the den every day. On September 27, 1999, live video from the den began being shown live on the Zoo’s website—the launch of Panda Cam!