The notes were written in 1975, a year before Mao's death, to a professor hired to read to the Communist leader. They were sold at Sotheby's in London for 10 times its estimated price, BBC reported.
The buyer was a Chinese collector, according to BBC.
However, Liu Yang, a Beijing-based lawyer specializing in cultural relics who has been working to retrieve relics overseas, told the Global Times newspaper that unless Mao gave the notes to the seller, the auction would be considered illegal.
Liu said the seller should identify the source of the notes.
The notes were written when Lu Di, then a Chinese teacher at Peking University, read to him as his health deteriorated, according to BBC.
(This story has not been edited by Social News XYZ staff and is auto-generated from a syndicated feed.)
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Doraiah Chowdary Vundavally is a Software engineer at VTech . He is the news editor of SocialNews.XYZ and Freelance writer-contributes Telugu and English Columns on Films, Politics, and Gossips. He is the primary contributor for South Cinema Section of SocialNews.XYZ. His mission is to help to develop SocialNews.XYZ into a News website that has no bias or judgement towards any.