diff --git a/src/test/java/com/lanyuanxiaoyao/service/template/TestApplication.java b/src/test/java/com/lanyuanxiaoyao/service/template/TestApplication.java
index 0f6970e..f34132b 100644
--- a/src/test/java/com/lanyuanxiaoyao/service/template/TestApplication.java
+++ b/src/test/java/com/lanyuanxiaoyao/service/template/TestApplication.java
@@ -190,7 +190,7 @@ public class TestApplication {
                     builder.in(root.get(Employee_.NAME)).value(List.of("Tom", "Mike")),
                     builder.between(root.get(Employee_.age), 0, 50),
                     builder.isNotEmpty(root.get(Employee_.company).get(Company_.employees)),
-                    builder.notEqual(root.get(Employee_.company).get(Company_.name), "Apple")
+                    builder.isMember(Company.Industry.MEDIA, root.get(Employee_.company).get(Company_.industries))
                 )
         )
     );
@@ -209,6 +209,8 @@ public class TestApplication {
                 .and(QEmployee.employee.age.between(0, 50))
                 .and(QEmployee.employee.company().employees.isNotEmpty())
                 .and(QEmployee.employee.company().employees.any().name.ne("Tom"))
+                .and(QEmployee.employee.company().industries.contains(Company.Industry.MEDIA))
+                .and(QEmployee.employee.connections.containsKey(Employee.ConnectionType.EMAIL))
         )
     );
 
diff --git a/src/test/java/com/lanyuanxiaoyao/service/template/entity/Company.java b/src/test/java/com/lanyuanxiaoyao/service/template/entity/Company.java
index 9f5aac9..80c1df8 100644
--- a/src/test/java/com/lanyuanxiaoyao/service/template/entity/Company.java
+++ b/src/test/java/com/lanyuanxiaoyao/service/template/entity/Company.java
@@ -1,9 +1,16 @@
 package com.lanyuanxiaoyao.service.template.entity;
 
 import jakarta.persistence.Column;
+import jakarta.persistence.ConstraintMode;
+import jakarta.persistence.ElementCollection;
 import jakarta.persistence.Entity;
 import jakarta.persistence.EntityListeners;
+import jakarta.persistence.EnumType;
+import jakarta.persistence.Enumerated;
+import jakarta.persistence.ForeignKey;
+import jakarta.persistence.JoinTable;
 import jakarta.persistence.OneToMany;
+import java.util.HashSet;
 import java.util.Set;
 import lombok.Getter;
 import lombok.Setter;
@@ -36,4 +43,23 @@ public class Company extends SimpleEntity {
   @OneToMany(mappedBy = "company")
   @ToString.Exclude
   private Set<Employee> employees;
+
+  @ElementCollection
+  @JoinTable(foreignKey = @ForeignKey(ConstraintMode.NO_CONSTRAINT), inverseForeignKey = @ForeignKey(ConstraintMode.NO_CONSTRAINT))
+  @Enumerated(EnumType.STRING)
+  @Column(nullable = false)
+  private Set<Industry> industries = new HashSet<>();
+
+  public enum Industry {
+    TECHNOLOGY,
+    FINANCE,
+    MEDIA,
+    SERVICE,
+    GOVERNMENT,
+    EDUCATION,
+    HEALTHCARE,
+    CONSTRUCTION,
+    RETAIL,
+    OTHER,
+  }
 }
diff --git a/src/test/java/com/lanyuanxiaoyao/service/template/entity/Employee.java b/src/test/java/com/lanyuanxiaoyao/service/template/entity/Employee.java
index 7eba730..7f4bc4c 100644
--- a/src/test/java/com/lanyuanxiaoyao/service/template/entity/Employee.java
+++ b/src/test/java/com/lanyuanxiaoyao/service/template/entity/Employee.java
@@ -2,15 +2,20 @@ package com.lanyuanxiaoyao.service.template.entity;
 
 import jakarta.persistence.Column;
 import jakarta.persistence.ConstraintMode;
+import jakarta.persistence.ElementCollection;
 import jakarta.persistence.Entity;
 import jakarta.persistence.EntityListeners;
 import jakarta.persistence.EnumType;
 import jakarta.persistence.Enumerated;
 import jakarta.persistence.ForeignKey;
 import jakarta.persistence.JoinColumn;
+import jakarta.persistence.JoinTable;
 import jakarta.persistence.ManyToOne;
+import jakarta.persistence.MapKeyEnumerated;
 import jakarta.persistence.NamedAttributeNode;
 import jakarta.persistence.NamedEntityGraph;
+import java.util.HashMap;
+import java.util.Map;
 import lombok.Getter;
 import lombok.Setter;
 import lombok.ToString;
@@ -51,8 +56,20 @@ public class Employee extends SimpleEntity {
   @ToString.Exclude
   private Company company;
 
+  @ElementCollection
+  @JoinTable(foreignKey = @ForeignKey(ConstraintMode.NO_CONSTRAINT), inverseForeignKey = @ForeignKey(ConstraintMode.NO_CONSTRAINT))
+  @MapKeyEnumerated(EnumType.STRING)
+  @Column(nullable = false)
+  private Map<ConnectionType, String> connections = new HashMap<>();
+
   public enum Role {
     USER,
     ADMIN,
   }
+
+  public enum ConnectionType {
+    EMAIL,
+    PHONE,
+    ADDRESS,
+  }
 }