diff --git a/code/esp32c3_espidf/main/hello_world_main.c b/code/esp32c3_espidf/main/hello_world_main.c
index daa5b13..f24ba8a 100644
--- a/code/esp32c3_espidf/main/hello_world_main.c
+++ b/code/esp32c3_espidf/main/hello_world_main.c
@@ -127,6 +127,7 @@ void app_main(void)
         // lcd_send_full_buf();
         // t = custom_tick_get();
         // ESP_LOGI(TAG, "NOW is%lu", t);
+        //this_work_loop();
 
         lv_task_handler();
         vTaskDelay(1); // 必须让出CPU
diff --git a/code/esp32c3_espidf/main/lv_apps/helloworld/lv_helloworld.c b/code/esp32c3_espidf/main/lv_apps/helloworld/lv_helloworld.c
index 9933f7e..8fb7f6d 100644
--- a/code/esp32c3_espidf/main/lv_apps/helloworld/lv_helloworld.c
+++ b/code/esp32c3_espidf/main/lv_apps/helloworld/lv_helloworld.c
@@ -8,27 +8,44 @@ LV_FONT_DECLARE(my_cn_font);
 /**
  * Create styles from scratch for buttons.
  */
+
+unsigned int t=0;
+char str[32]={0};
+
+lv_obj_t *label3 ; //lv_label_create(lv_screen_active()); /*Add a label to the button*/
+ static lv_style_t style_label;
+
+ void this_work_loop(){
+     t++;
+     //sprintf(str,"xxx:%lu",t);
+     //lv_label_set_text(label3, str); 
+     //lv_obj_add_style(label3, &style_label, 0);
+     lv_label_set_text_fmt(label3,"这是啥xxx:%d",t);
+     
+
+}
+
 void lv_example_get_started_1(void)
 {
 
     // 1. 加载中文字体
-    lv_font_t* cn_font_16 = load_chinese_font_from_spiffs("S:/spiffs/cn_font.bin");
-    if (cn_font_16 == NULL) {
-        ESP_LOGE(TAG, "无法加载中文字体，使用默认字体");
-        cn_font_16 = &my_cn_font; // 回退到默认字体
+    lv_font_t *cn_font_16 = &my_cn_font; // load_chinese_font_from_spiffs("S:/spiffs/cn_font.bin");
+    if (cn_font_16 == NULL)
+    {
+        ESP_LOGE(TAG, "无法加载中文字体");
+        // cn_font_16 = &my_cn_font; // 回退到默认字体
     }
 
-
     /*Change the active screen's background color*/
     lv_obj_set_style_bg_color(lv_screen_active(), lv_color_hex(0x003a57), LV_PART_MAIN);
 
-    static lv_style_t style_label;
+   
     lv_style_init(&style_label);
-    lv_style_set_text_font(&style_label, cn_font_16); // 关键：设置字体
+    //lv_style_set_text_font(&style_label, cn_font_16); // 关键：设置字体
 
     /*Create a white label, set its text and align it to the center*/
     lv_obj_t *label = lv_label_create(lv_screen_active());
-    lv_obj_add_style(label, &style_label, 0);
+    //lv_obj_add_style(label, &style_label, 0);
     lv_label_set_text(label, "Hello world 你好世界！");
     lv_obj_set_style_text_color(lv_screen_active(), lv_color_hex(0xffffff), LV_PART_MAIN);
     lv_obj_align(label, LV_ALIGN_CENTER, 0, 0);
@@ -40,4 +57,15 @@ void lv_example_get_started_1(void)
     lv_obj_t *label2 = lv_label_create(btn); /*Add a label to the button*/
     lv_label_set_text(label2, "Button");     /*Set the labels text*/
     lv_obj_center(label2);
-}
\ No newline at end of file
+
+    label3=lv_label_create(lv_screen_active()); /*Add a label to the button*/
+    
+    //lv_label_set_text(label3, "xxx:");                      /*Set the labels text*/
+    lv_obj_set_pos(label3, 200, 150);
+
+    lv_timer_create(this_work_loop, 1000, NULL);
+      
+}
+
+
+
diff --git a/code/esp32c3_espidf/main/lv_apps/helloworld/lv_helloworld.h b/code/esp32c3_espidf/main/lv_apps/helloworld/lv_helloworld.h
index f5104a4..1653c8b 100644
--- a/code/esp32c3_espidf/main/lv_apps/helloworld/lv_helloworld.h
+++ b/code/esp32c3_espidf/main/lv_apps/helloworld/lv_helloworld.h
@@ -5,5 +5,6 @@
 #include "esp_log.h"
 
 void lv_example_get_started_1(void);
+void this_work_loop();
 
 #endif
\ No newline at end of file
diff --git a/code/font/cn_font.bin b/code/font/cn_font.bin
index 73b5af4..1dc5dc2 100644
Binary files a/code/font/cn_font.bin and b/code/font/cn_font.bin differ
diff --git a/code/font/make_font_bin_test.cmd b/code/font/make_font_bin_test.cmd
new file mode 100644
index 0000000..b20950b
--- /dev/null
+++ b/code/font/make_font_bin_test.cmd
@@ -0,0 +1 @@
+lv_font_conv --font HarmonyOS_Sans_SC_Regular.ttf --size 16 --bpp 1 --range 0x20-0x7F --range 0x3000-0x303F --format bin --output cn_font.bin
\ No newline at end of file
diff --git a/code/font/make_test_font.cmd b/code/font/make_test_font.cmd
new file mode 100644
index 0000000..7e4e2da
--- /dev/null
+++ b/code/font/make_test_font.cmd
@@ -0,0 +1 @@
+lv_font_conv --font HarmonyOS_Sans_SC_Regular.ttf --size 16 --bpp 1 --symbols "你好世界ABC123℃" --format bin --output test_cn_font.bin
\ No newline at end of file
diff --git a/code/font/test_cn_font.bin b/code/font/test_cn_font.bin
new file mode 100644
index 0000000..c5aef4e
Binary files /dev/null and b/code/font/test_cn_font.bin differ