diff --git a/tencentcloud/services/ccn/resource_tc_ccn_attachment_test.go b/tencentcloud/services/ccn/resource_tc_ccn_attachment_test.go
index 1030b3b3e5..6c294da76e 100644
--- a/tencentcloud/services/ccn/resource_tc_ccn_attachment_test.go
+++ b/tencentcloud/services/ccn/resource_tc_ccn_attachment_test.go
@@ -180,9 +180,11 @@ resource tencentcloud_ccn main {
   bandwidth_limit_type = "INTER_REGION_LIMIT"
 }
 
+data "tencentcloud_user_info" "info" {}
+
 resource tencentcloud_ccn_attachment attachment_ccnuin {
   ccn_id          = tencentcloud_ccn.main.id
-  ccn_uin         = "100022770164"
+  ccn_uin         = data.tencentcloud_user_info.info.owner_uin
   instance_type   = "VPC"
   instance_id     = tencentcloud_vpc.vpc.id
   instance_region = var.region
diff --git a/tencentcloud/services/vpn/data_source_tc_vpn_gateways_test.go b/tencentcloud/services/vpn/data_source_tc_vpn_gateways_test.go
index c4041f7a6a..d362389933 100644
--- a/tencentcloud/services/vpn/data_source_tc_vpn_gateways_test.go
+++ b/tencentcloud/services/vpn/data_source_tc_vpn_gateways_test.go
@@ -47,5 +47,6 @@ resource "tencentcloud_vpn_gateway" "my_cgw" {
 
 data "tencentcloud_vpn_gateways" "cgws" {
   id = tencentcloud_vpn_gateway.my_cgw.id
+  depends_on = [tencentcloud_vpn_gateway.my_cgw]
 }
 `
diff --git a/tencentcloud/services/vpn/resource_tc_vpn_connection_test.go b/tencentcloud/services/vpn/resource_tc_vpn_connection_test.go
index 9a930b1aa8..6242e424ef 100644
--- a/tencentcloud/services/vpn/resource_tc_vpn_connection_test.go
+++ b/tencentcloud/services/vpn/resource_tc_vpn_connection_test.go
@@ -16,7 +16,6 @@ import (
 )
 
 func TestAccTencentCloudVpnConnectionResource_basic(t *testing.T) {
-	t.Parallel()
 	resource.Test(t, resource.TestCase{
 		PreCheck:     func() { tcacctest.AccPreCheck(t) },
 		Providers:    tcacctest.AccProviders,
diff --git a/tencentcloud/services/vpn/resource_tc_vpn_customer_gateway_configuration_download_test.go b/tencentcloud/services/vpn/resource_tc_vpn_customer_gateway_configuration_download_test.go
index f970494aef..b867bffe4f 100644
--- a/tencentcloud/services/vpn/resource_tc_vpn_customer_gateway_configuration_download_test.go
+++ b/tencentcloud/services/vpn/resource_tc_vpn_customer_gateway_configuration_download_test.go
@@ -9,7 +9,6 @@ import (
 )
 
 func TestAccTencentCloudVpnCustomerGatewayConfigurationDownloadResource_basic(t *testing.T) {
-	t.Parallel()
 	resource.Test(t, resource.TestCase{
 		PreCheck: func() {
 			tcacctest.AccPreCheck(t)
diff --git a/tencentcloud/services/vpn/resource_tc_vpn_gateway_route_test.go b/tencentcloud/services/vpn/resource_tc_vpn_gateway_route_test.go
index 5fdccbab68..54b42fd53e 100644
--- a/tencentcloud/services/vpn/resource_tc_vpn_gateway_route_test.go
+++ b/tencentcloud/services/vpn/resource_tc_vpn_gateway_route_test.go
@@ -17,7 +17,6 @@ import (
 )
 
 func TestAccTencentCloudVpnGatewayRoute_basic(t *testing.T) {
-	t.Parallel()
 	resource.Test(t, resource.TestCase{
 		PreCheck:     func() { tcacctest.AccPreCheck(t) },
 		Providers:    tcacctest.AccProviders,