this is H1

this is H1

this is H2

this is a blockquote
this is a blockquote
this is a blockquote

这是一个标题

1. 这是第一行列表项
2. 这是第二行列表项

• red
• green
• blue

• red
• green
• blue

1. red
2. green
3. blue

• A list item with a blockquote
  

  This is a blockquote

换行 两个空格+return
这是一个普通段落:
挺合适

single
single

  require 'redcarpept'
  x = 0