react中的子组件的呈现与react原生的不同吗？

class ParentComponent extends React.Component {
  render() {
    return (
      <div>
        <h1>Parent Component</h1>
        <ChildComponent />
      </div>
    );
  }
}

class ChildComponent extends React.Component {
  render() {
    return <h2>Child Component</h2>;
  }
}

class ParentComponent extends React.Component {
  render() {
    return (
      <div>
        <h1>Parent Component</h1>
        <h2>Child Component</h2>
      </div>
    );
  }
}