From Wikipedia

“1980s

Till the early 1980s, the leader of Ah Kong was Benson until he was jailed without trial in Singapore. The gang was later led by a new generation leader call Bernard, but better known as Siam-kia, which literally means Siamese Kid in Hokkien. Siam-kia had previously attained a university degree when he was in prison without trial in Singapore. After taking over the leadership of Ah Kong, Siam-kia handpicked a team of elite enforcers and ran the gang in executive style. A casino was opened at Kerkstraat 23 in Amsterdam.

There was an occasion when Siam-kia was disrespected by the 14K boss known as Ngau Si. A clash between the two gangs erupted. Ah Kong members were outnumbered but were already well known for being fearless and for their good fighting abilities as most of them were trained boxers and/or military-trained, and some others were fugitives on the run from death row and had nothing to lose. The members swore that they would rather die gloriously on the streets than to face the gallows and the wrath of the Singapore law. Ah Kong defeated 14K, after which Ngau Si permanently retreated to London, England.”