Geiju is a county-level city in Honghe Hani and Yi Autonomous Prefecture, Yunnan Province, China, with 202,000 urban inhabitants. It is the site of China's largest tin deposits and its main industry is mining.
The People's Republic of China's first reported AIDS case was identified in 1985 in a dying tourist. In 1989, the first indigenous cases were reported as an outbreak in 146 infected heroin users in Yunnan province, near China's southwest border.