Chinese billionaire and Crown high roller Huang Xiangmo's relationship with former NSW Labor party boss Jamie Clements and ex-state MP, Ernest Wong, will be the focus of fresh corruption commission hearings next month.

The Independent Commission Against Corruption will examine serious allegations of subversion of state election donation laws. Also of “significant public interest” to the corruption watchdog is possible foreign influence on the NSW electoral process by Chinese business figures, some of whom are understood to have close ties with the Chinese government.

Huang Xiangmo's relationship with key Labor figures will feature at an ICAC public hearing. Credit:James Brickwood

The Herald can also reveal that Mr Huang is an $800 million-per-year Crown casino high roller, and such a big punter that it used him as a case study of the benefits of uber-wealthy Chinese gamblers moving to live in Australia.

Leaked Crown documents, part of an ongoing investigation by The Sydney Morning Herald and The Age, can also reveal how Mr Huang dealt with powerful former Labor party operatives working for Crown Casino, even after ASIO warned Labor and the Coalition about him in August 2015.