There may have been an internal glitch causing the Chinese World of Warcraft product to interact incorrectly with other regional stores. Tokens, which can be exchanged for gold and back at the in-game auction, can indeed be bought in China on Classic servers. On other realms, according to open information, they should not have appeared in the donat shop.
The Burning Crusade Classic DLC will be released on the night of June 1–2. Formerly Blizzard released music video with Ron Perlman ahead of release.