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 restoration of the Shang dynasty. Nevertheless, such uprisings remained local and weak, so that Shang loyalism never again posed a serious threat to the Zhou dynasty. As the Duke of Zhou was later "revered as paragon of wisdom and humility" and respected as "great example" by Confucius, the revolt against his regency was consequently vilified. The Three Guards were considered as "evil men of old", over whom Duke Dan's virtue had triumphed. This interpretation dominated moralistic renditions of the civil war for centuries. Despite the generally negative view towards the rebels, there have been scholars who attempted a reassessment of