River Space is a brand new NFT artwork It is a scene/area or even a silhouette of the whole world that takes place in the Bianriverse. You can obtain it by choosing the right rivermen to combine. Rivermen：https://opensea.io/collection/rivermen RiverEstate：https://opensea.io/collection/riverestate RiverArt：https://opensea.io/collection/riverart RivermenGift：https://opensea.io/collection/rivermengift