3) The current NPoS Staking mechanism adopted by the StaFi mainnet is hard to be understood for an ordinary Staker, with regards to the consensus mechanism, the maximum number of nominators that a validator can have, the determinants of Reward, how to claim reward, how to choose the best validators, and so on. But with the emergence of rFIS, FIS stakers can conduct FIS Staking with just one-click.