diff --git a/cmd/cmd.go b/cmd/cmd.go
index aba47fc..8bf7d47 100644
--- a/cmd/cmd.go
+++ b/cmd/cmd.go
@@ -1,8 +1,10 @@
 package cmd
 
 import (
-	"github.com/spf13/cobra"
 	"log"
+
+	_ "github.com/Yuzuki616/V2bX/core/imports"
+	"github.com/spf13/cobra"
 )
 
 var command = &cobra.Command{
diff --git a/cmd/version.go b/cmd/version.go
index 0f2b0ce..4b5332a 100644
--- a/cmd/version.go
+++ b/cmd/version.go
@@ -2,7 +2,9 @@ package cmd
 
 import (
 	"fmt"
+	"strings"
 
+	vCore "github.com/Yuzuki616/V2bX/core"
 	"github.com/spf13/cobra"
 )
 
@@ -26,6 +28,7 @@ func init() {
 
 func showVersion() {
 	fmt.Printf("%s %s (%s) \n", codename, version, intro)
+	fmt.Printf("Supported cores: %s\n", strings.Join(vCore.RegisteredCore(), ", "))
 	// Warning
 	fmt.Println(Warn("This version need V2board version >= 1.7.0."))
 }
diff --git a/cmd/x25519.go b/cmd/x25519.go
index 2e3b9a3..791a4b0 100644
--- a/cmd/x25519.go
+++ b/cmd/x25519.go
@@ -4,6 +4,7 @@ import (
 	"crypto/rand"
 	"encoding/base64"
 	"fmt"
+
 	"github.com/spf13/cobra"
 	"golang.org/x/crypto/curve25519"
 )
@@ -45,7 +46,7 @@ func executeX25519() {
 		return
 	}
 
-	output = Err("Private key: ",
+	output = fmt.Sprint("Private key: ",
 		base64.RawURLEncoding.EncodeToString(privateKey),
 		"\nPublic key: ",
 		base64.RawURLEncoding.EncodeToString(publicKey))
diff --git a/core/core.go b/core/core.go
index 946e7da..6f02499 100644
--- a/core/core.go
+++ b/core/core.go
@@ -2,6 +2,8 @@ package core
 
 import (
 	"errors"
+	"strings"
+
 	"github.com/Yuzuki616/V2bX/conf"
 )
 
@@ -10,7 +12,7 @@ var (
 )
 
 func NewCore(c *conf.CoreConfig) (Core, error) {
-	if f, ok := cores[c.Type]; ok {
+	if f, ok := cores[strings.ToLower(c.Type)]; ok {
 		return f(c)
 	} else {
 		return nil, errors.New("unknown core type")
@@ -20,3 +22,11 @@ func NewCore(c *conf.CoreConfig) (Core, error) {
 func RegisterCore(t string, f func(c *conf.CoreConfig) (Core, error)) {
 	cores[t] = f
 }
+
+func RegisteredCore() []string {
+	cs := make([]string, 0, len(cores))
+	for k := range cores {
+		cs = append(cs, k)
+	}
+	return cs
+}
diff --git a/core/hy.go b/core/imports/hy.go
similarity index 84%
rename from core/hy.go
rename to core/imports/hy.go
index f3834c7..b59cbc3 100644
--- a/core/hy.go
+++ b/core/imports/hy.go
@@ -1,6 +1,6 @@
 //go:build hy
 
-package core
+package imports
 
 // not works for now
 //import _ "github.com/Yuzuki616/V2bX/core/hy"
diff --git a/core/xray.go b/core/imports/xray.go
similarity index 80%
rename from core/xray.go
rename to core/imports/xray.go
index 47afd9a..24c806d 100644
--- a/core/xray.go
+++ b/core/imports/xray.go
@@ -1,5 +1,5 @@
 //go:build xray
 
-package core
+package imports
 
 import _ "github.com/Yuzuki616/V2bX/core/xray"
diff --git a/core/xray/distro/all/all.go b/core/xray/distro/all/all.go
index 8f2186c..1a5f307 100644
--- a/core/xray/distro/all/all.go
+++ b/core/xray/distro/all/all.go
@@ -4,7 +4,7 @@ import (
 	// The following are necessary as they register handlers in their init functions.
 
 	// Mandatory features. Can't remove unless there are replacements.
-	_ "github.com/xtls/xray-core/app/dispatcher"
+	_ "github.com/Yuzuki616/V2bX/core/xray/app/dispatcher"
 	_ "github.com/xtls/xray-core/app/proxyman/inbound"
 	_ "github.com/xtls/xray-core/app/proxyman/outbound"
 
diff --git a/example/config.yml.example b/example/config.yml.example
index 3ab664b..4588845 100644
--- a/example/config.yml.example
+++ b/example/config.yml.example
@@ -1,17 +1,20 @@
-Log:
-  Level: warning # Log level: none, error, warning, info, debug 
-  AccessPath: # /etc/XrayR/access.Log
-  ErrorPath: # /etc/XrayR/error.log
-DnsConfigPath: # /etc/XrayR/dns.json # Path to dns config, check https://xtls.github.io/config/dns.html for help
-RouteConfigPath: # /etc/XrayR/route.json # Path to route config, check https://xtls.github.io/config/routing.html for help
-InboundConfigPath: # /etc/XrayR/custom_inbound.json # Path to custom inbound config, check https://xtls.github.io/config/inbound.html for help
-OutboundConfigPath: # /etc/XrayR/custom_outbound.json # Path to custom outbound config, check https://xtls.github.io/config/outbound.html for help
-ConnetionConfig:
-  Handshake: 4 # Handshake time limit, Second
-  ConnIdle: 30 # Connection idle time limit, Second
-  UplinkOnly: 2 # Time limit when the connection downstream is closed, Second
-  DownlinkOnly: 4 # Time limit when the connection is closed after the uplink is closed, Second
-  BufferSize: 64 # The internal cache size of each connection, kB 
+CoreConfig:
+  Type: "xray" # Core type
+  XrayConfig:
+    Log:
+      Level: warning # Log level: none, error, warning, info, debug
+      AccessPath: # /etc/XrayR/access.Log
+      ErrorPath: # /etc/XrayR/error.log
+    DnsConfigPath: # /etc/XrayR/dns.json # Path to dns config, check https://xtls.github.io/config/dns.html for help
+    RouteConfigPath: # /etc/XrayR/route.json # Path to route config, check https://xtls.github.io/config/routing.html for help
+    InboundConfigPath: # /etc/XrayR/custom_inbound.json # Path to custom inbound config, check https://xtls.github.io/config/inbound.html for help
+    OutboundConfigPath: # /etc/XrayR/custom_outbound.json # Path to custom outbound config, check https://xtls.github.io/config/outbound.html for help
+    ConnectionConfig:
+      Handshake: 4 # Handshake time limit, Second
+      ConnIdle: 30 # Connection idle time limit, Second
+      UplinkOnly: 2 # Time limit when the connection downstream is closed, Second
+      DownlinkOnly: 4 # Time limit when the connection is closed after the uplink is closed, Second
+      BufferSize: 64 # The internal cache size of each connection, kB
 Nodes:
   - ApiConfig:
       ApiHost: "http://127.0.0.1:667"