Genuine board games sold in general stores will not be much cheaper, nor will they be less than five yuan. The box you mentioned must be pirated. Standard version of 39 yuan, the packaging bag outside will have anti-counterfeiting certification and the label of the board game network. The black box you mentioned is an imitation collector's edition, and the genuine collector's edition is priced at 98. It is a black iron box, which contains only standard military warfare and wind and fire. You can see it at the flagship store.