A Very "Simple" Cyber Conundrum

Here is a simple cyber and political conundrum...

If, as the Pentagon now says, a cyber attack is to be considered an act of war:

WASHINGTON—The Pentagon has concluded that computer sabotage coming from another country can constitute an act of war, a finding that for the first time opens the door for the U.S. to respond using
traditional military force.

How does the United States now handle China?