A former NSW Labor MP says he had "an alcoholic blackout" at a party fundraising dinner but admits he was involved in concealing the true source of political donations totalling $23,000.

Key points: Ernest Wong was in charge of allocating tables at the NSW Labor fundraising dinner in 2015

Ernest Wong was in charge of allocating tables at the NSW Labor fundraising dinner in 2015 He said he remembered giving property developer Huang Xiangmo a bag of money at the end of the night

He said he remembered giving property developer Huang Xiangmo a bag of money at the end of the night The ICAC is investigating whether Mr Xiangmo gave an illegal $100,000 cash donation to NSW Labor in an Aldi shopping bag.

Ernest Wong was today called back to give evidence at the Independent Commission Against Corruption (ICAC) regarding a 2015 Chinese Friends of Labor dinner.

He claimed he suffered "an alcoholic blackout" at the event and could not be certain about his handling of a bag containing tens of thousands of dollars in cash.

The ICAC is investigating whether the party disguised a $100,000 donation from exiled property developer Huang Xiangmo by dividing it into smaller amounts made by other donors.

Mr Wong, who was in charge of allocating tables and maintaining a register of attendees, today admitted he gave restaurateur Jonathan Yee $3,000 as "a gift" to help him put aside tables and encourage more people to attend.

He admitted involvement in both this and another donation, of $20,000, and conceded the effect of his arrangement was that the true source of the money had been concealed.

But Mr Wong said this was "not intentionally" done.

Mr Wong said it was his best recollection that at the end of the night, he was given a bag containing tens of thousands of dollars in cash that he handed to Mr Huang, to be passed on to then Labor boss Jamie Clements.

But he added his memory may have been "reconstructed" by reading information in the years since.

"I had a few drinks on the night, and I had a bit of alcoholic blackout after the event," he told the inquiry.

"Sometimes my recollection isn't as clear as what you put to me."

Mr Wong told Commissioner Peter Hall QC he was "confusing himself" when he tried to remember the events.

He told the ICAC there was no receipt or record of the $3,000 "gift", and claimed it may have been used to purchase unnumbered tables which did not appear on a floor plan showed to the commission, nor a payment registry.

Property developer Huang Xiangmo is accused of breaching electoral funding laws. ( ABC News )

Counsel assisting the inquiry Scott Robertson said there was "hardly room to breathe" in the room that night.

"This is just fantasy, Mr Wong, absolute fantasy," he said.

"There is no room, unless you're going to have someone sitting on Mr Huang's lap, to have unnumbered tables."

Mr Wong accepted he was friends with Mr Huang and was viewed as a "prolific fundraiser" within the party.

But he denied he was instrumental in 2015 in giving Mr Huang access to senior NSW Labor party figures.

The inquiry continues.