In this photo released by the Taipei Zoo, Giant Pandas Tuan Tuan and Yuan Yuan are seen near their birthday cake to mark their 18th birthday at the Taipei Zoo in Taipei, Taiwan on Tuesday, Aug. 30, 2022. Tuan Tuan and Yuan Yuan are two giant pandas that were given by China to Taiwan in 2008 as part of an exchange program. Combining their names, "tuan yuan" means "unification" in Chinese language. (Taipei Zoo via AP)