如何在Angular中路由到子路由？

import { RouterModule, Routes } from '@angular/router';

import { ChildComponent } from './child.component';

const routes: Routes = [
  { path: 'child', component: ChildComponent }
];

@NgModule({
  imports: [RouterModule.forRoot(routes)],
  exports: [RouterModule]
})
export class AppModule { }

<a routerLink="/child">Go to Child</a>

<router-outlet></router-outlet>

import { Component } from '@angular/core';

@Component({
  selector: 'app-child',
  template: '<h1>Child Component</h1>'
})
export class ChildComponent { }