First of all, if you publish books at your own expense, Xinhua Bookstore can generally distribute them as long as you take formal channels and legal books. It is not easy for individuals to contact Xinhua Bookstore to buy your account. As long as the power of attorney is officially published, there is no reason to refuse to open this qualification. Without the power of attorney of the agency, even through other publishers, you can't enter Xinhua Bookstore.
The second is to contact some book publishers who can sell you books at a discount. The circulation is bigger than Xinhua Bookstore.
Third, individuals sell online, but excellent, Dangdang, you can't get in, they are not individuals. Only Taobao, pat and so on.