diff --git a/coolq/cqcode.go b/coolq/cqcode.go
index edb6a70..6333899 100644
--- a/coolq/cqcode.go
+++ b/coolq/cqcode.go
@@ -155,7 +155,7 @@ func ToArrayMessage(e []message.IMessageElement, groupID int64) (r []MSG) {
 		var m MSG
 		switch o := elem.(type) {
 		case *message.ReplyElement:
-			if RemoveReplyAt && len(e) > i+1 {
+			if RemoveReplyAt && i+1 < len(e) && e[i+1].Type() == message.At {
 				elem, ok := e[i+1].(*message.AtElement)
 				if ok && elem.Target == o.Sender {
 					e[i+1] = nil
@@ -180,7 +180,7 @@ func ToArrayMessage(e []message.IMessageElement, groupID int64) (r []MSG) {
 			} else {
 				m = MSG{
 					"type": "at",
-					"data": map[string]string{"qq": fmt.Sprint(o.Target)},
+					"data": map[string]string{"qq": strconv.FormatInt(o.Target, 10)},
 				}
 			}
 		case *message.RedBagElement:
@@ -234,12 +234,12 @@ func ToArrayMessage(e []message.IMessageElement, groupID int64) (r []MSG) {
 			if isOk := strings.Contains(o.Content, "<?xml"); isOk {
 				m = MSG{
 					"type": "xml",
-					"data": map[string]string{"data": o.Content, "resid": fmt.Sprintf("%d", o.Id)},
+					"data": map[string]string{"data": o.Content, "resid": strconv.FormatInt(int64(o.Id), 10)},
 				}
 			} else {
 				m = MSG{
 					"type": "json",
-					"data": map[string]string{"data": o.Content, "resid": fmt.Sprintf("%d", o.Id)},
+					"data": map[string]string{"data": o.Content, "resid": strconv.FormatInt(int64(o.Id), 10)},
 				}
 			}
 		default:
@@ -947,12 +947,35 @@ func XMLEscape(c string) string {
 ] -> &#93;
 
 */
-func CQCodeEscapeText(raw string) string {
-	ret := raw
-	ret = strings.ReplaceAll(ret, "&", "&amp;")
-	ret = strings.ReplaceAll(ret, "[", "&#91;")
-	ret = strings.ReplaceAll(ret, "]", "&#93;")
-	return ret
+func CQCodeEscapeText(s string) string {
+	count := strings.Count(s, "&")
+	count += strings.Count(s, "[")
+	count += strings.Count(s, "]")
+	if count == 0 {
+		return s
+	}
+
+	// Apply replacements to buffer.
+	var b strings.Builder
+	b.Grow(len(s) + count*4)
+	start := 0
+	for i := 0; i < count; i++ {
+		j := start + strings.IndexFunc(s[start:], func(r rune) bool {
+			return r == '&' || r == '[' || r == ']'
+		})
+		b.WriteString(s[start:j])
+		switch s[j] {
+		case '&':
+			b.WriteString("&amp;")
+		case '[':
+			b.WriteString("&#91;")
+		case ']':
+			b.WriteString("&#93;")
+		}
+		start = j + 1
+	}
+	b.WriteString(s[start:])
+	return b.String()
 }
 
 /*CQCodeEscapeValue 将字符串value中部分字符转义
diff --git a/coolq/cqcode_test.go b/coolq/cqcode_test.go
index 8a25ed9..3edf7bb 100644
--- a/coolq/cqcode_test.go
+++ b/coolq/cqcode_test.go
@@ -2,8 +2,11 @@ package coolq
 
 import (
 	"fmt"
+	"strings"
 	"testing"
 
+	"github.com/Mrs4s/MiraiGo/utils"
+	"github.com/stretchr/testify/assert"
 	"github.com/tidwall/gjson"
 )
 
@@ -30,3 +33,32 @@ func BenchmarkCQBot_ConvertObjectMessage(b *testing.B) {
 		bot.ConvertObjectMessage(benchArray, false)
 	}
 }
+
+const bText = `123456789[]&987654321[]&987654321[]&987654321[]&987654321[]&987654321[]&`
+
+func BenchmarkCQCodeEscapeText(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		ret := bText
+		ret = CQCodeEscapeText(ret)
+	}
+}
+
+func BenchmarkCQCodeEscapeTextBefore(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		ret := bText
+		ret = strings.ReplaceAll(ret, "&", "&amp;")
+		ret = strings.ReplaceAll(ret, "[", "&#91;")
+		ret = strings.ReplaceAll(ret, "]", "&#93;")
+	}
+}
+
+func TestCQCodeEscapeText(t *testing.T) {
+	for i := 0; i < 200; i++ {
+		rs := utils.RandomStringRange(3000, "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890[]&")
+		ret := rs
+		ret = strings.ReplaceAll(ret, "&", "&amp;")
+		ret = strings.ReplaceAll(ret, "[", "&#91;")
+		ret = strings.ReplaceAll(ret, "]", "&#93;")
+		assert.Equal(t, ret, CQCodeEscapeText(rs))
+	}
+}
diff --git a/global/codec.go b/global/codec.go
index 5437881..9ff78cb 100644
--- a/global/codec.go
+++ b/global/codec.go
@@ -2,7 +2,7 @@ package global
 
 import (
 	"crypto/md5"
-	"fmt"
+	"encoding/hex"
 	"os"
 	"os/exec"
 	"path"
@@ -19,7 +19,7 @@ func EncoderSilk(data []byte) ([]byte, error) {
 	if err != nil {
 		return nil, errors.Wrap(err, "calc md5 failed")
 	}
-	tempName := fmt.Sprintf("%x", h.Sum(nil))
+	tempName := hex.EncodeToString(h.Sum(nil))
 	if silkPath := path.Join("data/cache", tempName+".silk"); PathExists(silkPath) {
 		return os.ReadFile(silkPath)
 	}
diff --git a/global/update/update.go b/global/update/update.go
index 0b54b9d..b7028e5 100644
--- a/global/update/update.go
+++ b/global/update/update.go
@@ -7,7 +7,6 @@ import (
 	"fmt"
 	"hash"
 	"io"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 
@@ -42,7 +41,7 @@ func FromStream(updateWith io.Reader) (err error, errRecover error) {
 	// no patch to apply, go on through
 	bufBytes := bufio.NewReader(updateWith)
 	updateWith = io.Reader(bufBytes)
-	newBytes, err = ioutil.ReadAll(updateWith)
+	newBytes, err = io.ReadAll(updateWith)
 	if err != nil {
 		return
 	}