A: First of all, starting a cross-chain project with Ethereum is our admiration for this smart contract pioneer, and secondly, because Ethereum has the world's most mature ecosystem on it. The second choice of chain was more about privacy and low Gas fees. We made a list of well-known public chains that support smart contracts, and after very careful research, we decided to use Super ZERO (SERO) because it has low Gas fees and is the only public chain that supports NFT assets anonymity, which is very important to us because NFT is our core asset component.