diff --git a/src/main/java/com/io/yutian/aulib/gui/Gui.java b/src/main/java/com/io/yutian/aulib/gui/Gui.java
index b317d7d..491b206 100644
--- a/src/main/java/com/io/yutian/aulib/gui/Gui.java
+++ b/src/main/java/com/io/yutian/aulib/gui/Gui.java
@@ -4,6 +4,7 @@ import com.io.yutian.aulib.AuLib;
 import com.io.yutian.aulib.gui.button.Button;
 import com.io.yutian.aulib.gui.button.ClickType;
 import com.io.yutian.aulib.gui.button.ItemButton;
+import net.kyori.adventure.text.Component;
 import org.bukkit.Sound;
 import org.bukkit.entity.Player;
 import org.bukkit.event.inventory.InventoryAction;
@@ -16,7 +17,7 @@ public class Gui extends IGui {
 
     private Map<Integer, Button> buttons = new HashMap<>();
 
-    public Gui(Player player, String title, int size) {
+    public Gui(Player player, Component title, int size) {
         super(player, title, size);
     }
 
diff --git a/src/main/java/com/io/yutian/aulib/gui/IGui.java b/src/main/java/com/io/yutian/aulib/gui/IGui.java
index 21d74d7..3adcf25 100644
--- a/src/main/java/com/io/yutian/aulib/gui/IGui.java
+++ b/src/main/java/com/io/yutian/aulib/gui/IGui.java
@@ -20,11 +20,11 @@ public abstract class IGui implements InventoryHolder {
     public Inventory inventory;
     public Player player;
 
-    private String title;
+    private Component title;
     private int size;
 
-    public IGui(Player player, String title, int size) {
-        this.inventory = Bukkit.createInventory(this, size, Component.text(title));
+    public IGui(Player player, Component title, int size) {
+        this.inventory = Bukkit.createInventory(this, size, title);
         this.title = title;
         this.size = size;
         this.player = player;
diff --git a/src/main/java/com/io/yutian/aulib/gui/PageGui.java b/src/main/java/com/io/yutian/aulib/gui/PageGui.java
index d338b48..301a11b 100644
--- a/src/main/java/com/io/yutian/aulib/gui/PageGui.java
+++ b/src/main/java/com/io/yutian/aulib/gui/PageGui.java
@@ -4,6 +4,7 @@ import com.io.yutian.aulib.AuLib;
 import com.io.yutian.aulib.gui.button.Button;
 import com.io.yutian.aulib.gui.button.ClickType;
 import com.io.yutian.aulib.gui.button.ItemButton;
+import net.kyori.adventure.text.Component;
 import org.bukkit.Sound;
 import org.bukkit.entity.Player;
 import org.bukkit.event.inventory.InventoryAction;
@@ -15,11 +16,11 @@ import java.util.Map;
 public class PageGui extends IGui {
 
     private int page = 1;
-    private int maxPage = 1;
+    private int maxPage;
 
     private Map<Integer, Page> pages = new HashMap<>();
 
-    public PageGui(Player player, String title, int size, int maxPage) {
+    public PageGui(Player player, Component title, int size, int maxPage) {
         super(player, title, size);
         this.maxPage = maxPage;
     }
@@ -41,8 +42,7 @@ public class PageGui extends IGui {
                 Button button = entry.getValue();
                 if (button.isAsynchronous()) {
                     AuLib.inst().getServer().getScheduler().runTaskAsynchronously(AuLib.inst(), ()->{
-                        if (button instanceof ItemButton) {
-                            ItemButton itemButton = (ItemButton) button;
+                        if (button instanceof ItemButton itemButton) {
                             if (itemButton.getItem() != null) {
                                 inventory.setItem(entry.getKey(), itemButton.getItem());
                                 return;
@@ -51,8 +51,7 @@ public class PageGui extends IGui {
                         inventory.setItem(entry.getKey(), button.getItemStack());
                     });
                 } else {
-                    if (button instanceof ItemButton) {
-                        ItemButton itemButton = (ItemButton) button;
+                    if (button instanceof ItemButton itemButton) {
                         if (itemButton.getItem() != null) {
                             inventory.setItem(entry.getKey(), itemButton.getItem());
                             continue;