Can Confucius' old book network be purchased offline?

You can't buy it offline. Now Confucius' old book network is not as good as before, and he buys pirated books, especially books marked "brand-new". When you see the out-of-print books that can't be bought by major websites, the new books that are normally priced in Confucius are basically pirated. Look at the store's recent transactions, evaluations and grades before buying. Generally, old shops don't sell such books.

So when you buy books about Confucius, as long as you see actual pictures and books with reasonable prices (expensive ones), they are generally genuine books or even new books. Other old books are rarely pirated, unless the shopkeeper doesn't know that there are pirated old books on his bookshelf, but this is rare. Relatively speaking, Confucius second-hand book network is still an important channel to buy genuine books.