The development of modern organized
triads in Taiwan largely goes back to the 1950s following the
retreat of the Republic of China to Taiwan. The
Four Seas Gang was founded in 1954 and is the second largest gang in Taiwan with 46 branches and over 700 known members. The
Bamboo Union was formed by
waishengren children of
Kuomintang soldiers who wanted to consolidate power against
Hoklo Taiwanese. The first members lived on Zhulin Road () in what is now
Yonghe District in
New Taipei City. It was established in 1957. Former leader
Chang An-lo confirmed the 1984 plot to assassinate writer
Henry Liu after his publication of an unauthorized biography of president
Chiang Ching-kuo. He recounted that intelligence bureau chief
Wang Hsi-ling sent gangsters
Chen Chi-li and Wu Dun to assassinate Liu, though according to another account,
Chiang Hsiao-wu dispatched the gangsters. In response to the public outcry over Liu's murder, the government carried out Operation Clean Sweep, a widespread crackdown that led to the arrest of 2,346 gangsters and confiscation of large quantities of guns and knives. Small-time
jiaotou boss
Lo Fu-chu was imprisoned and suffered at the hands of other gangs. Three years later, in 1986, Lo created an alliance of local
jiaotou gangs named the Heavenly Way Gang (), now the third largest gang, as a
benshengren response to the
waishengren-dominated gangs. After
martial law was lifted in 1987, organized crime saw a surge in the supply of smuggled guns and drugs, resulting from a reduction in maritime patrols. Mob infiltration of business and politics became more common in the 1990s. Taiwan's
Ministry of the Interior stated in 2017 that China's
Ministry of State Security operates an "external liaison office" in
Xiamen which communicates with and provides financial assistance to organized criminal groups in Taiwan. == International activity ==