[785] How to write nested layout?

I code like this:

// layout_0.vue
<template>
  <h1>Hello World</h1>
</template>

// layout_1.vue
<template>
  <nuxt />
  <h2>Hello China</h2>
</template>
<script>
  export default {
    layout: 'layout_0'
  };
</script>

But it doesn't work.

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<div align="right"><sub><em>This question is available on <a href="https://nuxtjs.cmty.io">Nuxt.js</a> community (<a href="https://nuxtjs.cmty.io/nuxt/nuxt.js/issues/c673">#c673</a>)</em></sub></div>