diff --git a/consensus/satoshi/satoshi.go b/consensus/satoshi/satoshi.go
index 6abfd7147..ff4f75f16 100644
--- a/consensus/satoshi/satoshi.go
+++ b/consensus/satoshi/satoshi.go
@@ -269,7 +269,6 @@ func New(
 		candidateHubABI: cABI,
 		signer:          types.NewEIP155Signer(chainConfig.ChainID),
 	}
-	
 	return c
 }
 
diff --git a/core/types/transaction.go b/core/types/transaction.go
index 38a01b643..080ec3770 100644
--- a/core/types/transaction.go
+++ b/core/types/transaction.go
@@ -28,7 +28,7 @@ import (
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/common/math"
 	"github.com/ethereum/go-ethereum/crypto"
-	"github.com/ethereum/go-ethereum/eth/gasprice/locaFeeMarket"
+	"github.com/ethereum/go-ethereum/eth/gasprice/lfm"
 	"github.com/ethereum/go-ethereum/rlp"
 )
 
@@ -170,7 +170,7 @@ func (tx *Transaction) UnmarshalBinary(b []byte) error {
 		//@lfm RPC invocation route: adjust tx gas price
 		if data.OrigGasPrice == nil {
 			data.OrigGasPrice = data.GasPrice
-			data.GasPrice = locaFeeMarket.AdjustGasPrice(data.Gas, data.Value, data.To, data.Data, data.OrigGasPrice)
+			data.GasPrice = lfm.AdjustGasPrice(data.Gas, data.Value, data.To, data.Data, data.OrigGasPrice)
 		}
 		tx.setDecoded(&data, len(b))
 		return nil
diff --git a/eth/gasprice/locaFeeMarket/nativediscount.go b/eth/gasprice/lfm/nativediscount.go
similarity index 78%
rename from eth/gasprice/locaFeeMarket/nativediscount.go
rename to eth/gasprice/lfm/nativediscount.go
index f00894b7e..895ab902e 100644
--- a/eth/gasprice/locaFeeMarket/nativediscount.go
+++ b/eth/gasprice/lfm/nativediscount.go
@@ -1,4 +1,4 @@
-package locaFeeMarket
+package lfm
 
 import (
 	"bytes"
@@ -49,8 +49,10 @@ var (
 	debugDiscountedGasPrice = new(big.Int).SetUint64(18_000_000_000)
 
 	errNotFunctionInvocation = errors.New("tx is not a function invocation")
+)
 
-	//-------
+// white-listed erc20 map
+var (
 	btcLstContract = common.HexToAddress("0xTBD")
 
 	internalErc20Whitelist = map[common.Address]bool{
@@ -109,66 +111,6 @@ func calcCoreTransferDiscountedGasPrice(networkGasPrice *big.Int)  *big.Int {
 	return internalCalcDiscountedGasPrice(networkGasPrice)
 }
 
-func obsolete__internalCalcDiscountedGasPrice(networkGasPrice *big.Int)  *big.Int {
-	networkPrice := networkGasPrice.Uint64()
-	const MEAN = historicalMeanGasPrice
-	const LOW_WATERMARK = (700*MEAN)/1000
-	var discounted uint64
-
-	switch {
-	case networkPrice <= LOW_WATERMARK:
-		discounted = networkPrice // no discount
-	case networkPrice <= MEAN:
-		discounted = LOW_WATERMARK
-	case networkPrice <= MEAN+789473684:
-		discounted = MEAN + 220850187
-	case networkPrice <= MEAN+1578947368:
-		discounted = MEAN + 229206660
-	case networkPrice <= MEAN+2368421053:
-		discounted = MEAN + 237511346
-	case networkPrice <= MEAN+3157894737:
-		discounted = MEAN + 245739149
-	case networkPrice <= MEAN+3947368421:
-		discounted = MEAN + 253865910
-	case networkPrice <= MEAN+4736842105:
-		discounted = MEAN + 261868680
-	case networkPrice <= MEAN+5526315789:
-		discounted = MEAN + 269725961
-	case networkPrice <= MEAN+6315789474:
-		discounted = MEAN + 277417917
-	case networkPrice <= MEAN+7105263158:
-		discounted = MEAN + 284926545
-	case networkPrice <= MEAN+7894736842:
-		discounted = MEAN + 292235799
-	case networkPrice <= MEAN+8684210526:
-		discounted = MEAN + 299331682
-	case networkPrice <= MEAN+9473684211:
-		discounted = MEAN + 306202288
-	case networkPrice <= MEAN+10263157895:
-		discounted = MEAN + 312837812
-	case networkPrice <= MEAN+11052631579:
-		discounted = MEAN + 319230518
-	case networkPrice <= MEAN+11842105263:
-		discounted = MEAN + 325374683
-	case networkPrice <= MEAN+12631578947:
-		discounted = MEAN + 331266505
-	case networkPrice <= MEAN+13421052632:
-		discounted = MEAN + 336903992
-	case networkPrice <= MEAN+14210526316:
-		discounted = MEAN + 342286837
-	default:
-		discounted = maxDiscountedGasPrice
-	}
-
-	if discounted != networkPrice {
-		discounted = min(discounted, networkPrice)          // sanity check: discounted gas-price cannot exceed networkPrice
-		discounted = min(discounted, maxDiscountedGasPrice) // sanity check: discounted gas-price cannot exceed maxDiscountedGasPrice value
-		discounted = max(discounted, networkPrice/2)        // sanity check: discounted gas-price cannot go below half of the networkPrice price
-	}
-	return new(big.Int).SetUint64(discounted)
-}
-
-
 /**
   discrete steps for the sigmoid function sig(x) = 1 / (1 + e^(-3 * (x - 0.8)))
   where x denotes the historical mean, slightly modified for simplicity
@@ -302,17 +244,3 @@ func validApproveData(functionSelector []byte, dataLen int) bool {
 func eq(a []byte, b []byte) bool {
 	return bytes.Equal(a, b)
 }
-
-func min(a, b uint64) uint64 {
-	if a < b {
-		return a
-	}
-	return b
-}
-
-func max(a, b uint64) uint64 {
-	if a > b {
-		return a
-	}
-	return b
-}
\ No newline at end of file
diff --git a/internal/ethapi/api.go b/internal/ethapi/api.go
index d10ee460a..1c6944af4 100644
--- a/internal/ethapi/api.go
+++ b/internal/ethapi/api.go
@@ -43,7 +43,7 @@ import (
 	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/ethereum/go-ethereum/core/vm"
 	"github.com/ethereum/go-ethereum/crypto"
-	"github.com/ethereum/go-ethereum/eth/gasprice/locaFeeMarket"
+	"github.com/ethereum/go-ethereum/eth/gasprice/lfm"
 	"github.com/ethereum/go-ethereum/eth/tracers/logger"
 	"github.com/ethereum/go-ethereum/log"
 	"github.com/ethereum/go-ethereum/p2p"
@@ -1006,7 +1006,7 @@ func DoEstimateGas(ctx context.Context, b Backend, args TransactionArgs, blockNr
 		hi  uint64
 		cap uint64
 	)
-	args.GasPrice = locaFeeMarket.AdjustGasPriceForEstimation(args.GasPrice, args.Gas, args.Value, args.To, args.data()) //@lfm
+	args.GasPrice = lfm.AdjustGasPriceForEstimation(args.GasPrice, args.Gas, args.Value, args.To, args.data()) //@lfm
 	// Use zero address if sender unspecified.
 	if args.From == nil {
 		args.From = new(common.Address)