diff --git a/src/applet/adguard.c b/src/applet/adguard.c
index 6aad475..9deaa3a 100644
--- a/src/applet/adguard.c
+++ b/src/applet/adguard.c
@@ -84,9 +84,9 @@ process* adguard_load(adguard *info, const char *dir) { // load adguard options
         log_fatal("Invalid AdGuardHome password");
     }
 
-    create_folder(dir); // ensure adguard work dir exist
     char *adguard_config_ret;
     char *adguard_config_file = string_join(dir, "AdGuardHome.yaml");
+    create_folder(dir); // ensure adguard work dir exist
 
     if (!is_file_exist(adguard_config_file)) { // AdGuardHome configure not exist
         log_info("Create AdGuardHome configure");
diff --git a/src/applet/dnsproxy.c b/src/applet/dnsproxy.c
index 47512a0..ca2f480 100644
--- a/src/applet/dnsproxy.c
+++ b/src/applet/dnsproxy.c
@@ -74,7 +74,6 @@ process* dnsproxy_load(const char *caption, dnsproxy *info, const char *file) {
         log_fatal("%s without primary dns server", caption);
     }
 
-    create_folder(WORK_DIR); // ensure work dir exist
     char *config = dnsproxy_config(info); // string config with json format
     char *config_file = string_join(WORK_DIR, file);
     save_file(config_file, config); // load dnsproxy configure
diff --git a/src/applet/overture.c b/src/applet/overture.c
index 2f5506e..393478e 100644
--- a/src/applet/overture.c
+++ b/src/applet/overture.c
@@ -63,7 +63,6 @@ process* overture_load(overture *info, const char *file) { // load overture opti
         log_fatal("Timeout of overture with invalid value 0");
     }
 
-    create_folder(WORK_DIR); // ensure work dir exist
     char *config = overture_config(info); // string config (JSON format)
     char *config_file = string_join(WORK_DIR, file);
     save_file(config_file, config);
diff --git a/src/cleardns.c b/src/cleardns.c
index 8e566e1..240da77 100644
--- a/src/cleardns.c
+++ b/src/cleardns.c
@@ -47,8 +47,7 @@ int main(int argc, char *argv[]) { // ClearDNS service
     log_info("ClearDNS server start (%s)", VERSION);
     create_folder(EXPOSE_DIR);
     create_folder(WORK_DIR);
-    // TODO: cd EXPOSE_DIR
-    assets_extract(); // extract built-in resource
+    chdir(EXPOSE_DIR);
 
     load_config(config_file);
     free(config_file);
@@ -69,14 +68,14 @@ int main(int argc, char *argv[]) { // ClearDNS service
     dnsproxy_free(loader.domestic);
     dnsproxy_free(loader.foreign);
     assets_free(loader.resource);
-    if (loader.filter != NULL) {
-        process_list_append(adguard_load(loader.filter, ADGUARD_DIR));
-        adguard_free(loader.filter);
-    }
     if (loader.crond != NULL) {
         process_list_append(crontab_load(loader.crond));
         crontab_free(loader.crond);
     }
+    if (loader.filter != NULL) {
+        process_list_append(adguard_load(loader.filter, ADGUARD_DIR));
+        adguard_free(loader.filter);
+    }
 
     for (char **script = loader.script; *script != NULL; ++script) { // run custom script
         log_info("Run custom script -> `%s`", *script);
diff --git a/src/loader/loader.c b/src/loader/loader.c
index 0861d44..5ef8029 100644
--- a/src/loader/loader.c
+++ b/src/loader/loader.c
@@ -95,8 +95,7 @@ overture* load_diverter(cleardns_config *config) {
 
     uint32_list_update(&diverter->reject_type, config->reject);
     if (!config->assets.disable) {
-        // TODO: extract assets
-
+        assets_extract(); // extract built-in resource
         load_diverter_assets();
     }
     return diverter;
diff --git a/src/utils/assets.c b/src/utils/assets.c
index 6199cbe..048024c 100644
--- a/src/utils/assets.c
+++ b/src/utils/assets.c
@@ -45,9 +45,10 @@ void assets_load(assets *info) { // load assets mapping
 }
 
 void assets_update() { // update all assets
-
-    // TODO: skip when assets map is empty
-
+    if (!string_list_len(update.update_file)) { // empty assets mapping
+        log_info("Skip update assets");
+        return;
+    }
     log_info("Start assets update");
     for (char **file = update.update_file; *file != NULL; ++file) {
         char **url = file - update.update_file + update.update_url;
@@ -65,7 +66,7 @@ void assets_extract() { // init assets and load update process
     extract(ASSET_GFW_LIST);
     extract(ASSET_CHINA_IP);
     extract(ASSET_CHINA_LIST);
-    log_info("Assets loaded complete");
+    log_info("Assets loading complete");
 }
 
 void extract(const char *file) { // extract one asset file from `.tar.xz` file
diff --git a/src/utils/process.c b/src/utils/process.c
index 9e550e9..40a61b4 100644
--- a/src/utils/process.c
+++ b/src/utils/process.c
@@ -42,17 +42,17 @@ process* process_init(const char *caption, const char *bin) { // init process st
 void process_dump(process *proc) { // output process options into debug log
     char *process_cmd = string_list_dump(proc->cmd);
     char *process_env = string_list_dump(proc->env);
+    log_debug("%s env variable -> %s", proc->name, process_env);
     log_debug("%s cwd -> %s", proc->name, proc->cwd);
     log_debug("%s command -> %s", proc->name, process_cmd);
-    log_debug("%s env variable -> %s", proc->name, process_env);
     free(process_env);
     free(process_cmd);
 }
 
 void process_exec(process *proc) {
     pid_t pid;
-    process_dump(proc);
     log_info("%s start", proc->name);
+    process_dump(proc);
     if ((pid = fork()) < 0) { // fork error
         log_perror("%s fork error", proc->name);
         server_exit(EXIT_FORK_ERROR);
@@ -95,7 +95,7 @@ void process_list_run() { // start process list
     signal(SIGCHLD, get_sub_exit); // callback when child process die
     for (process **proc = process_list; *proc != NULL; ++proc) {
         process_exec(*proc);
-        usleep(100 * 1000); // delay 100ms
+        usleep(200 * 1000); // delay 200ms
     }
     log_info("Process start complete");
 }
@@ -147,6 +147,7 @@ void server_exit(int exit_code) { // kill sub process and exit
     }
     EXITED = TRUE;
     log_info("All sub-process exited");
+    log_warn("ClearDNS exit");
     exit(exit_code);
 }