Dig a hole to go to China?

Geographically, China is on the other side of the United States, so many Americans say: Dig a hole in the backyard and you will end up in China. Dig a hole in the backyard and go straight to China.

This extension means that things are getting worse and worse, and the difficulties are getting deeper and deeper, or it is right to add fuel to the fire. Think about it, digging a hole in the United States and crossing the center of the earth is the longest and most troublesome thing. Isn't it just going to China?

So now there is an irony in the United States: Bush has dug us a hole leading to China. Bush has made our economy worse and worse.