B-side: Writers and copyright holders can publish books on the blockchain, launch book NFT, and sell e-books. C-side: NFT investors and readers can invest in potential book NFT, distribute e-books to get high commissions, and read to earn. B端：作家/版权方可链上出版图书，发行图书NFT，销售电子书； C端：NFT投资者/读者可投资图书NFT，分发电子书获取高分佣，阅读赚钱。