diff --git a/README.md b/README.md
index 6783f8d..587ecb1 100644
--- a/README.md
+++ b/README.md
@@ -40,6 +40,7 @@ rvcmd tools/ffmpeg
         Copy: # files to download
           - v1-5-pruned-emaonly.ckpt
           - v1-5-pruned-emaonly.safetensors
+      - Folder: sd1.5/vae # the folder you want to download into
           - vae/diffusion_pytorch_model.bin
     ```
 2. Run `rvcmd` in the same folder.
diff --git a/go.mod b/go.mod
index 648e875..4370284 100644
--- a/go.mod
+++ b/go.mod
@@ -5,13 +5,11 @@ go 1.22.1
 require (
 	github.com/pkg/errors v0.9.1
 	github.com/sirupsen/logrus v1.9.3
+	golang.org/x/sys v0.19.0
 	gopkg.in/yaml.v3 v3.0.1
 )
 
-require (
-	github.com/fumiama/terasu v0.0.0-20240418151245-719e0c16831b
-	golang.org/x/sys v0.19.0
-)
+require github.com/fumiama/terasu v0.0.0-20240418161858-1c3273a78268
 
 require (
 	github.com/FloatTech/ttl v0.0.0-20230307105452-d6f7b2b647d1 // indirect
diff --git a/go.sum b/go.sum
index c54567f..50b79db 100644
--- a/go.sum
+++ b/go.sum
@@ -5,8 +5,8 @@ github.com/RomiChan/syncx v0.0.0-20240418144900-b7402ffdebc7/go.mod h1:vD7Ra3Q9o
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/fumiama/terasu v0.0.0-20240418151245-719e0c16831b h1:j6DMJg+jd4HPmhQtVwtiHBM1y9XskJgWhskUvWuhFuY=
-github.com/fumiama/terasu v0.0.0-20240418151245-719e0c16831b/go.mod h1:afchyfKAb7J/zvaENtYzjIEPVbwiEjJaow05zzT4usM=
+github.com/fumiama/terasu v0.0.0-20240418161858-1c3273a78268 h1:6R8kSGVSIoR3xm2NG8Z4ivkTpAET783RFsJOVKrI7n8=
+github.com/fumiama/terasu v0.0.0-20240418161858-1c3273a78268/go.mod h1:afchyfKAb7J/zvaENtYzjIEPVbwiEjJaow05zzT4usM=
 github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
 github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
diff --git a/main.go b/main.go
index e59a622..c4e4781 100644
--- a/main.go
+++ b/main.go
@@ -27,6 +27,7 @@ func main() {
 	dnsf := flag.String("dns", "", "custom dns.yaml")
 	cust := flag.Bool("c", false, "use custom yaml instruction")
 	force := flag.Bool("f", false, "force download even file exists")
+	wait := flag.Uint("w", 4, "connection waiting seconds")
 	flag.Parse()
 	args := flag.Args()
 	if len(args) != 1 {
@@ -62,7 +63,7 @@ func main() {
 		logrus.Errorln(err)
 		return
 	}
-	err = usercfg.download(args[0], "", *cust, !*ntrs, *force)
+	err = usercfg.download(args[0], "", time.Second*time.Duration(*wait), *cust, !*ntrs, *force)
 	if err != nil {
 		logrus.Errorln(err)
 		return
diff --git a/net.go b/net.go
index 1380586..e24cba6 100644
--- a/net.go
+++ b/net.go
@@ -16,7 +16,7 @@ import (
 	"github.com/sirupsen/logrus"
 )
 
-func (c *config) download(path, prefix string, usecust, usetrs, force bool) error {
+func (c *config) download(path, prefix string, waits time.Duration, usecust, usetrs, force bool) error {
 	for i, t := range c.Targets {
 		if t.Refer != "" {
 			refp := path[:strings.LastIndex(path, "/")+1] + t.Refer
@@ -25,7 +25,7 @@ func (c *config) download(path, prefix string, usecust, usetrs, force bool) erro
 			if err != nil {
 				return err
 			}
-			err = refcfg.download(refp, prefix+strconv.Itoa(i+1)+".", usecust, usetrs, force)
+			err = refcfg.download(refp, prefix+strconv.Itoa(i+1)+".", waits, usecust, usetrs, force)
 			if err != nil {
 				return err
 			}
@@ -54,20 +54,11 @@ func (c *config) download(path, prefix string, usecust, usetrs, force bool) erro
 		for j, cp := range t.Copy {
 			go func(i int, cp, prefix string) {
 				defer wg.Done()
-				if strings.Contains(cp, "/") { // have innner folder
-					infldr := t.Folder + "/" + cp[:strings.LastIndex(cp, "/")]
-					err := os.MkdirAll(infldr, 0755)
-					if err != nil {
-						logrus.Errorf("#%s%d make target inner folder '%s' err: %v", prefix, i+1, t.Folder, err)
-						return
-					}
-					logrus.Infof("#%s%d make target inner folder '%s'.", prefix, i+1, t.Folder)
-				}
-				sleep := time.Millisecond * 100 * time.Duration(i)
+				sleep := waits * time.Duration(i)
 				if sleep > time.Millisecond {
 					time.Sleep(sleep)
 				}
-				fname := t.Folder + "/" + cp
+				fname := t.Folder + "/" + cp[strings.LastIndex(cp, "/")+1:]
 				if !force {
 					if _, err := os.Stat(fname); err == nil || os.IsExist(err) {
 						logrus.Warnf("#%s%d skip exist file %s", prefix, i+1, fname)