Pro-establishment heavyweight Regina Ip Lau Suk-yee says she will call for the camp to "unite" at a tea gathering with Beijing's liaison office chief tonight. The gathering is believed to be the liaison office's first meeting with the pro-establishment camp since October. It comes a week after 31 pro-establishment lawmakers walked out of the chamber, seconds before the historic vote on the electoral reform package was due to take place. It was an attempt to force a suspension of the meeting so that ally Lau Wong-fat could make it for the vote. But as nine stayed amid confusion and eight voted for the package, it gave the impression that the blueprint lacked support. Meanwhile, Lau dismissed rumours that he was considering quitting Legco. The bungled vote was described as an embarrassment for Beijing. Speaking anonymously, a pro-establishment lawmaker said Beijing could demand accountability in the future. But Liberal Party chairman Felix Chung Kwok-pan believed the main goal of the gathering was to set the minds of pro-establishment legislators at ease. New People's Party chairwoman Ip also said she would "call for lawmakers not to linger on the issue any more. "One week is enough for us to vent our emotions, but now we need to strengthen our unity." Ip Kwok-him, from the Democratic Alliance for the Betterment and Progress of Hong Kong, who described himself as a "decision maker" in the walkout, said he would apologise again during tonight's gathering. "I will explain what happened as I am largely responsible," Ip said. It is understood that the meeting will start at 9.30pm and last for about two hours. A total of 42 lawmakers were invited but some will not attend because of other engagements. Medical sector lawmaker Leung Ka-lau, once regarded as pro-establishment but who voted against the reform package last week, was not invited. Pro-establishment independent Paul Tse Wai-chun said the gathering would be in four parts: opening remarks by the DAB's Tam Yiu-chung and Ip Kwok-him and business representative Jeffrey Lam Kin-fung; speeches by six party representatives and independents; speeches by Legco president Jasper Tsang Yok-sing and liaison office chief Zhang Xiaoming ; and a discussion session. Tse also confirmed that in a meeting among pro-establishment lawmakers yesterday, he suggested the camp could learn from the pan-democrats, who elect a convenor every year. Ip, who was regarded as the camp's coordinator, suggested that he did not mind giving up the role "if anyone is willing to help".