diff --git a/src/main/java/org/mineplugin/locusazzurro/icaruswings/client/particle/PlasmaTrailParticle.java b/src/main/java/org/mineplugin/locusazzurro/icaruswings/client/particle/PlasmaTrailParticle.java
index 75c72d3..8e456df 100644
--- a/src/main/java/org/mineplugin/locusazzurro/icaruswings/client/particle/PlasmaTrailParticle.java
+++ b/src/main/java/org/mineplugin/locusazzurro/icaruswings/client/particle/PlasmaTrailParticle.java
@@ -19,7 +19,7 @@ public PlasmaTrailParticle(ClientLevel world, double x, double y, double z, doub
         this.xd = xSpeed + (Math.random() * 2.0d - 1.0d) * 0.005d;
         this.yd = ySpeed + (Math.random() * 2.0d - 1.0d) * 0.005d;
         this.zd = zSpeed + (Math.random() * 2.0d - 1.0d) * 0.005d;
-        this.lifetime = (int)(10 / Math.random() * 1.5f);
+        this.lifetime = (int)Math.min(50f, (10 / Math.random() * 1.5f));
         this.hasPhysics = true;
     }
 
diff --git a/src/main/java/org/mineplugin/locusazzurro/icaruswings/common/entity/ArtemisMissileEntity.java b/src/main/java/org/mineplugin/locusazzurro/icaruswings/common/entity/ArtemisMissileEntity.java
index 43afb9d..c11a240 100644
--- a/src/main/java/org/mineplugin/locusazzurro/icaruswings/common/entity/ArtemisMissileEntity.java
+++ b/src/main/java/org/mineplugin/locusazzurro/icaruswings/common/entity/ArtemisMissileEntity.java
@@ -35,6 +35,7 @@ public class ArtemisMissileEntity extends AbstractHurtingProjectile {
     private static final int DEFAULT_FUEL = 1200; // Default: 1200 (60s)
     private int fuel;
     private double homingSpeed = 1.1;
+    private double cruisingSpeed = 0.8;
     private static final ParticleOptions PARTICLE = ParticleRegistry.PLASMA_TRAIL.get();
     
     // 空白粒子
@@ -140,6 +141,10 @@ public void tick() {
                     .normalize().scale(homingSpeed);
             this.setDeltaMovement(v3d);
         }
+        else {
+            this.setDeltaMovement(this.getDeltaMovement().normalize().scale(cruisingSpeed));
+        }
+
         if (this.fuel <= 0) {
             this.onEmptyFuel();
         }
diff --git a/src/main/java/org/mineplugin/locusazzurro/icaruswings/common/item/ArtemisLauncher.java b/src/main/java/org/mineplugin/locusazzurro/icaruswings/common/item/ArtemisLauncher.java
index f0f7d4c..24f5654 100644
--- a/src/main/java/org/mineplugin/locusazzurro/icaruswings/common/item/ArtemisLauncher.java
+++ b/src/main/java/org/mineplugin/locusazzurro/icaruswings/common/item/ArtemisLauncher.java
@@ -32,7 +32,7 @@ public InteractionResultHolder<ItemStack> use(Level worldIn, Player playerIn, In
             return InteractionResultHolder.pass(item);
         }
 
-        LivingEntity entity = ProjectileUtils.rayTraceTarget(playerIn, 0.1f, 300, 1);
+        LivingEntity entity = ProjectileUtils.rayTraceTarget(playerIn, ProjectileUtils.IS_HOSTILE, 0.5f, 500, 2);
         ArtemisMissileEntity missile;
         if (entity != null) {
             missile = new ArtemisMissileEntity(worldIn, playerIn, entity);
diff --git a/src/main/java/org/mineplugin/locusazzurro/icaruswings/common/item/ArtemisTransportCard.java b/src/main/java/org/mineplugin/locusazzurro/icaruswings/common/item/ArtemisTransportCard.java
index c056eef..5217bff 100644
--- a/src/main/java/org/mineplugin/locusazzurro/icaruswings/common/item/ArtemisTransportCard.java
+++ b/src/main/java/org/mineplugin/locusazzurro/icaruswings/common/item/ArtemisTransportCard.java
@@ -38,7 +38,7 @@ public InteractionResultHolder<ItemStack> use(Level worldIn, Player playerIn, In
         LivingEntity target = null;
         boolean homing = (type == CardType.ARTEMIS_HOMING);
         if (homing) {
-            target = ProjectileUtils.rayTraceTarget(playerIn, 0.1d, 300, 0.2);
+            target = ProjectileUtils.rayTraceTarget(playerIn, ProjectileUtils.IS_HOSTILE, 0.5f, 500, 2);
             if (target == null) {
                 if (!worldIn.isClientSide()) {
                     playerIn.sendSystemMessage(Component.translatable("item.locusazzurro_icaruswings.transport_card_artemis.error1"));
diff --git a/src/main/java/org/mineplugin/locusazzurro/icaruswings/util/ProjectileUtils.java b/src/main/java/org/mineplugin/locusazzurro/icaruswings/util/ProjectileUtils.java
index 06044d0..ed8d476 100644
--- a/src/main/java/org/mineplugin/locusazzurro/icaruswings/util/ProjectileUtils.java
+++ b/src/main/java/org/mineplugin/locusazzurro/icaruswings/util/ProjectileUtils.java
@@ -1,16 +1,20 @@
 package org.mineplugin.locusazzurro.icaruswings.util;
 
 import net.minecraft.world.entity.LivingEntity;
+import net.minecraft.world.entity.MobCategory;
 import net.minecraft.world.phys.AABB;
 import net.minecraft.world.phys.Vec3;
 
 import javax.annotation.Nullable;
 import java.util.List;
+import java.util.function.Predicate;
 
 public class ProjectileUtils {
 
+    public static final Predicate<LivingEntity> IS_HOSTILE = e -> e.getType().getCategory().equals(MobCategory.MONSTER);
+
     @Nullable
-    public static LivingEntity rayTraceTarget(LivingEntity targeter, double step, int depth, double size){
+    public static LivingEntity rayTraceTarget(LivingEntity targeter, Predicate<LivingEntity> criteria, double step, int depth, double size){
         Vec3 eyePos = targeter.getEyePosition(1f);
         Vec3 lookVec = targeter.getViewVector(1f);
         Vec3 checkPos = eyePos;
@@ -19,7 +23,7 @@ public static LivingEntity rayTraceTarget(LivingEntity targeter, double step, in
             AABB aabb = new AABB(hS,hS,hS,-hS,-hS,-hS).move(checkPos);
             List<LivingEntity> entities = targeter.level().getEntitiesOfClass(LivingEntity.class, aabb);
             for (LivingEntity entity : entities){
-                if (entity != targeter && targeter.hasLineOfSight(entity)) return entity;
+                if (entity != targeter && criteria.test(entity) && targeter.hasLineOfSight(entity)) return entity;
             }
             checkPos = checkPos.add(lookVec.scale(step));
         }
@@ -27,8 +31,8 @@ public static LivingEntity rayTraceTarget(LivingEntity targeter, double step, in
     }
 
     @Nullable
-    public static LivingEntity rayTraceTargetFixedDistance(LivingEntity targeter, double step, int distance, double size){
-        return rayTraceTarget(targeter, step, (int)Math.ceil(distance/step), size);
+    public static LivingEntity rayTraceTargetFixedDistance(LivingEntity targeter, Predicate<LivingEntity> criteria, double step, int distance, double size){
+        return rayTraceTarget(targeter, criteria, step, (int)Math.ceil(distance/step), size);
     }
 
 }