Less than three weeks before a Chinese billionaires" banquet, sponsored by Bill Gates and Warren Buffett on September 29, only two Chinese businessmen have confirmed they are attending. Gates and Buffett initiated a project, " The Giving Pledge" , in June【C1】______at persuading billionaires in the United States to give the【C2】______of their wealth, 50 percent or more, to【C3】______ Although the Microsoft mogul has announced that he would not lobby Chinese billionaires to follow【C4】______, the banquet is turning into a test【C5】______donating to China"s charities,【C6】______the two American billionaires promote philanthropy in the world"s most populous country【C7】______donating personal wealth to charity has yet to become a common【C8】______ A deep-rooted concept among wealthy individuals in China is to leave their【C9】______fortunes to their descendants, which might be a major obstacle【C10】______donations to charity, according to Zhang Yinjun, spokesperson with one of China"s largest charity【C11】______, the China Charity Federation. "If Gates and Buffett"s visit and banquet【C12】______change Chinese billionaire"s concept on the handling of their fortunes, that would be a good start to【C13】______more people to donate to society, " Zhang told Xinhua on Tuesday. " China has a totally【C14】______social condition and environment, so【C15】______or not Chinese billionaires accept Gates" and Buffett"s ideas, will be their personal【C16】______, " Zhang said. Gates" project office is still having【C17】______in confirming the attendance of others in the select group of about 50 wealthy individuals, as many still【C18】______, said Zhang Jing, spokeswoman of the Bill and Melinda Gates foundation Beijing Representative Office on Tuesday. She said the office had to repeatedly convince those who received invitations that the organizers had【C19】______combined donation plan for the charity meeting and that the activities would be closed to the media in order to keep the participants"【C20】______confidential. 【C10】