Troides helena common in many of the localities in which it occurs, was classified as vulnerable in 1985. Helen in Greek mythology Helen was the daughter of Zeus. Cerberus or Kerberos, in Greek and Roman mythology, is a multi-headed hound which guards the gates of the Underworld. This species is protected under Wild Animals Protection Ordinance Cap 170 in Hong Kong. The common birdwing is protected in Indonesia and may also require protection in peninsular Malaya also. It is listed in Appendix II of Convention on the International Trade in Endangered Species of Wild Flora and Fauna (CITES) as are all other
Rebellion of the Three Guards rise in rebellion. The two rebellious brothers quickly convinced Huoshu of the rightfulness of their cause, uniting the Three Guards against the Duke of Zhou. They and the Shang loyalists were soon joined by many independent-minded nobles, especially from the southeast. Large swaths of the Zhou dynasty's eastern realm rose against the official government at Fenghao, including some states that controlled crucial passes and routes. The rebel state of Ying, for example, "was located near the exit of the Ying River valley connecting with the Luoyang plain and right at the entrance to the Nanyang Basin, controlling the road to