diff --git a/Korean_HQ.nml b/Korean_HQ.nml
index 7ce2ff6..239dfb5 100644
--- a/Korean_HQ.nml
+++ b/Korean_HQ.nml
@@ -4,8 +4,8 @@
         name:                               string(STR_GRF_NAME);
         desc:                               string(STR_GRF_DESC);
         url:                                string(STR_GRF_URL);
-        version:                            240303;
-        min_compatible_version:             240303;
+        version:                            240312;
+        min_compatible_version:             240312;
     }
 
 // Templates
@@ -32,19 +32,19 @@
         }
 
     // mid_building
-        template tmpl_mid_building_2X2_north(x, y) {
+        template tmpl_mid_building_2x2_north(x, y) {
             [x, y, 140, 180, -69, -116]
         }
 
-        template tmpl_mid_building_2X2_east(x, y) {
+        template tmpl_mid_building_2x2_east(x, y) {
             [x, y, 140, 180, -101, -132]
         }
 
-        template tmpl_mid_building_2X2_west(x, y) {
+        template tmpl_mid_building_2x2_west(x, y) {
             [x, y, 140, 180, -37, -132]
         }
 
-        template tmpl_mid_building_2X2_south(x, y) {
+        template tmpl_mid_building_2x2_south(x, y) {
             [x, y, 140, 180, -69, -148]
         }
 
@@ -72,7 +72,39 @@
 
     // 384 to 511
 
+///////////////////////////////////////////////////////////////////////////////////////////////
+/*
     // 512 to 767
+        replace (2619, "./Korean_HQ/gfx/HQ_512.png") { // building N
+            tmpl_mid_building_2x2_north(0, 0)
+        }
+
+        replace (2621, "./Korean_HQ/gfx/HQ_512.png") { // building E
+            tmpl_mid_building_2x2_east(150, 0)
+        }
+
+        replace (2623, "./Korean_HQ/gfx/HQ_512.png") { // building W
+            tmpl_mid_building_2x2_west(300, 0)
+        }
+
+        replace (2618, "./Korean_HQ/gfx/HQ_512.png") { // ground N
+            tmpl_mid_building_2x2_north(450, 0)
+        }
+
+        replace (2620, "./Korean_HQ/gfx/HQ_512.png") { // ground E
+            tmpl_mid_building_2x2_east(600, 0)
+        }
+
+        replace (2622, "./Korean_HQ/gfx/HQ_512.png") { // ground W
+            tmpl_mid_building_2x2_west(750, 0)
+        }
+
+        replace (2624, "./Korean_HQ/gfx/HQ_512.png") { // ground S
+            tmpl_mid_building_2x2_south(900, 0)
+        }
+
+*/
+///////////////////////////////////////////////////////////////////////////////////////////////
 
     // 768 to 1000
         replace (2626, "./Korean_HQ/gfx/HQ_768.png") { // building N
@@ -103,11 +135,11 @@
             tmpl_high_building_2x2_south(900, 0)
         }
 
-////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+///////////////////////////////////////////////////////////////////////////////////////////////////
    /* 본사건물
    0  : 조선총독부 철도국 청사
    256: 
    384: 서울메트로 본사
    512: 한국철도공사 서울본부
     */
-////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
\ No newline at end of file
+///////////////////////////////////////////////////////////////////////////////////////////////////
\ No newline at end of file
diff --git a/changelog.txt b/changelog.txt
index b23585a..59e5dff 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -1,3 +1,3 @@
-한국 HQ (2024.03.03)
+한국 HQ (2024.03.12)
 -----------------------------------------
-한국도시세트로부터 건물 분리: 5단계 본사(모델: 한국철도공사 본사)
+한국도시세트로부터 건물 분리: 5단계 본사(모델: 한국철도공사 본사)
\ No newline at end of file
diff --git a/gfx/HQ_512.png b/gfx/HQ_512.png
new file mode 100644
index 0000000..904ece7
Binary files /dev/null and b/gfx/HQ_512.png differ
diff --git a/lang/english.lng b/lang/english.lng
index 1c7dc0a..35af2dd 100644
--- a/lang/english.lng
+++ b/lang/english.lng
@@ -2,6 +2,6 @@
 
 # GRF name and description
 STR_GRF_NAME                                      	:Korean HQ
-STR_GRF_DESC                                      	:Korean HQ adds Korean style headquarters except North Korea. {}{}{BLACK}Rating 5: {SILVER}KORAIL Head office {}{}{BLACK}License: {SILVER}GNU GPL v3
+STR_GRF_DESC                                      	:Korean HQ adds Korean style headquarters. Buildings rating 1~4 will be added soon. {}{}{BLACK}Rating 5: {SILVER}KORAIL Head office {}{}{BLACK}License: {SILVER}GNU GPL v3
 
 STR_GRF_URL                                       	:https://github.com/SerpensNebula/Korean-HQ
\ No newline at end of file
diff --git a/lang/korean.lng b/lang/korean.lng
index 56bd4cc..52ccc76 100644
--- a/lang/korean.lng
+++ b/lang/korean.lng
@@ -2,6 +2,6 @@
 
 # GRF name and description
 STR_GRF_NAME                                      	:한국 HQ
-STR_GRF_DESC                                      	:이 NewGRF는 북한을 제외한 한국 스타일의 회사 본사 건물을 추가해줍니다. {}{}{BLACK}5단계: {SILVER}한국철도공사 본사 {}{}{BLACK}라이센스: {SILVER}GNU GPL v3
+STR_GRF_DESC                                      	:이 NewGRF는 한국 스타일의 회사 본사 건물을 추가해줍니다. 1단계와 4단계 건물은 추가 예정입니다. {}{}{BLACK}5단계: {SILVER}한국철도공사 본사 {}{}{BLACK}라이센스: {SILVER}GNU GPL v3
 
 STR_GRF_URL                                       	:https://github.com/SerpensNebula/Korean-HQ
\ No newline at end of file