diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index c8419f7..c1d5aaf 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -20,10 +20,10 @@
     </configurations>
   </component>
   <component name="ChangeListManager">
-    <list default="true" id="cea36e80-e289-4d69-9030-7186d540ac0e" name="更改" comment="reduce flash">
-      <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/chinese.h" beforeDir="false" afterPath="$PROJECT_DIR$/chinese.h" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/版本说明.txt" beforeDir="false" afterPath="$PROJECT_DIR$/版本说明.txt" afterDir="false" />
+    <list default="true" id="cea36e80-e289-4d69-9030-7186d540ac0e" name="更改" comment="rebuild chinese">
+      <change beforePath="$PROJECT_DIR$/app/app.c" beforeDir="false" afterPath="$PROJECT_DIR$/app/app.c" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/ui/main.c" beforeDir="false" afterPath="$PROJECT_DIR$/ui/main.c" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/ui/main.h" beforeDir="false" afterPath="$PROJECT_DIR$/ui/main.h" afterDir="false" />
     </list>
     <option name="SHOW_DIALOG" value="false" />
     <option name="HIGHLIGHT_CONFLICTS" value="true" />
@@ -134,7 +134,7 @@
       <workItem from="1701325367312" duration="22657000" />
       <workItem from="1701413653518" duration="3544000" />
       <workItem from="1701430185864" duration="10115000" />
-      <workItem from="1701559895523" duration="19045000" />
+      <workItem from="1701559895523" duration="21426000" />
     </task>
     <task id="LOCAL-00001" summary="bug fix">
       <created>1701136012311</created>
@@ -304,7 +304,14 @@
       <option name="project" value="LOCAL" />
       <updated>1701670725835</updated>
     </task>
-    <option name="localTasksCounter" value="25" />
+    <task id="LOCAL-00025" summary="rebuild chinese">
+      <created>1701674241852</created>
+      <option name="number" value="00025" />
+      <option name="presentableId" value="LOCAL-00025" />
+      <option name="project" value="LOCAL" />
+      <updated>1701674241852</updated>
+    </task>
+    <option name="localTasksCounter" value="26" />
     <servers />
   </component>
   <component name="TypeScriptGeneratedFilesManager">
@@ -323,7 +330,6 @@
     <MESSAGE value="lite create" />
     <MESSAGE value="lite aim" />
     <MESSAGE value="create" />
-    <MESSAGE value="rebuild chinese" />
     <MESSAGE value="fix bug" />
     <MESSAGE value="掃描下翻譯" />
     <MESSAGE value="fix https://github.com/losehu/uv-k5-firmware-chinese/issues/4" />
@@ -332,6 +338,7 @@
     <MESSAGE value="mdc tx end test" />
     <MESSAGE value="test create" />
     <MESSAGE value="reduce flash" />
-    <option name="LAST_COMMIT_MESSAGE" value="reduce flash" />
+    <MESSAGE value="rebuild chinese" />
+    <option name="LAST_COMMIT_MESSAGE" value="rebuild chinese" />
   </component>
 </project>
\ No newline at end of file
diff --git a/app/app.c b/app/app.c
index 26eca4a..821d172 100644
--- a/app/app.c
+++ b/app/app.c
@@ -1399,7 +1399,17 @@ void APP_TimeSlice500ms(void)
 		if (--gDTMF_RX_timeout == 0)
 			DTMF_clear_RX();
 #endif
-
+#ifdef ENABLE_MDC1200
+    if (mdc1200_rx_ready_tick_500ms > 0)
+		{
+			if (--mdc1200_rx_ready_tick_500ms == 0)
+			{
+				if (center_line == CENTER_LINE_MDC1200)
+					center_line = CENTER_LINE_NONE;
+				gUpdateDisplay = true;
+			}
+		}
+#endif
     // Skipped authentic device check
 
 #ifdef ENABLE_FMRADIO
diff --git a/ui/main.c b/ui/main.c
index c453d6e..67c730d 100644
--- a/ui/main.c
+++ b/ui/main.c
@@ -13,6 +13,7 @@
  *     See the License for the specific language governing permissions and
  *     limitations under the License.
  */
+#include "app/mdc1200.h"
 #include "chinese.h"
 #include <string.h>
 #include <stdlib.h>  // abs()
@@ -708,7 +709,23 @@ void UI_DisplayMain(void)
 		const bool rx = (gCurrentFunction == FUNCTION_RECEIVE ||
 		                 gCurrentFunction == FUNCTION_MONITOR ||
 		                 gCurrentFunction == FUNCTION_INCOMING);
-
+#ifdef ENABLE_MDC1200
+        if (mdc1200_rx_ready_tick_500ms > 0)
+		{
+			center_line = CENTER_LINE_MDC1200;
+			#ifdef ENABLE_MDC1200_SHOW_OP_ARG
+				sprintf(String, "MDC1200 %02X %02X %04X", mdc1200_op, mdc1200_arg, mdc1200_unit_id);
+			#else
+				sprintf(String, "MDC1200 ID %04X", mdc1200_unit_id);
+			#endif
+			#ifdef ENABLE_SMALL_BOLD
+				UI_PrintStringSmallBold(String, 2, 0, 3);
+			#else
+				UI_PrintStringSmall(String, 2, 0, 3);
+			#endif
+		}
+		else
+#endif
 #ifdef ENABLE_AUDIO_BAR
 		if (gCurrentFunction == FUNCTION_TRANSMIT) {
 			center_line = CENTER_LINE_AUDIO_BAR;
diff --git a/ui/main.h b/ui/main.h
index ba01acc..69c1eab 100644
--- a/ui/main.h
+++ b/ui/main.h
@@ -24,7 +24,8 @@ enum center_line_t {
 	CENTER_LINE_RSSI,
 	CENTER_LINE_AM_FIX_DATA,
 	CENTER_LINE_DTMF_DEC,
-	CENTER_LINE_CHARGE_DATA
+	CENTER_LINE_CHARGE_DATA,
+    CENTER_LINE_MDC1200
 };
 typedef enum center_line_t center_line_t;