NRC fixed investment profit-taking algorithm has an annualized rate of return of about 20%. It is most suitable for unstable markets with ups and downs. At the same time, the transaction frequency is very low. It is very suitable for smart contract scheduling. Safe, each user generates a smart contract separately, no financial institutions are involved, the principal is locked in the user's smart contract address, and there is no worry about the principal. Long-term benefits: no time limit. As long as humans have greed and fear, fixed investment profit-taking will continue to make money silently.