Hong Kong authorities have arrested 42 people in a joint crackdown on triad infiltration and corruption involving a consultancy firm and its building maintenance projects worth HK$180 million (US$23 million), according to the city’s anti-graft watchdog.The arrestees include a consultancy firm owner, a registered inspector and multiple middlemen with organised crime backgrounds.The Independent Commission Against Corruption (ICAC) said on Monday that it carried out a joint operation with police...