First, the lottery selection procedure is based on the principle of "one-vote veto", and the expert group votes by secret ballot back to back. If someone questions the authenticity of the lot, the lot will not be photographed;
Second, all the works in the auction are jointly issued by a number of experts recognized in the industry and given to buyers (after the transaction) or sellers (unfinished) free of charge;
3. Within 30 days after the lot is sold, if the buyer has doubts about the authenticity and can provide convincing reasons and materials, the original price (including commission) can be returned. Changfeng Auction has reached a permanent fidelity agreement with some sellers, which will be indicated in the catalogue. If the buyer has doubts about the authenticity and can provide convincing reasons and materials within five years after the auction, it can be returned at the original price (excluding commission).