Edinburgh many museums and libraries. These include the National Museum of Scotland, the National Library of Scotland, National War Museum, the Museum of Edinburgh, Surgeons' Hall Museum, the Writers' Museum, the Museum of Childhood and Our Dynamic Earth. The Museum on the Mound has exhibits on money and banking. Edinburgh Zoo, covering on Corstorphine Hill, is the second most popular paid tourist attraction in Scotland, and currently home to two giant pandas, Tian Tian and Yang Guang, on loan from the People's Republic of China. Edinburgh is also home to The Royal Yacht Britannia, decommissioned in 1997 and now a five-star
Tian Lingzi in 881) to threaten not to allow Zheng through Fengxiang when Emperor Xizong would be returning to Chang'an. Zheng was forced to resign and retire to Peng Prefecture (彭州, in modern Chengdu). Meanwhile, Tian and Chen had also alienated Yang Shili by promising to make another general, Gao Renhou, the military governor of Dongchuan. Tian tried to preempt any actions Yang might take by summoning Yang to Chengdu in spring 884. Yang reacted by openly declaring a campaign against Tian and Chen. Gao subsequently waged a campaign against Yang, putting Dongchuan's capital Zi Prefecture (梓州) under siege. Yang's subordinate Zheng