After the U.S. announced military sales and aid to Taiwan, China says the U.S. is “playing with fire.” In a statement, the Chinese government said Sunday, Dec. 22, that Taiwan is the “first red line that cannot be crossed” in relations between the two global superpowers. The U.S. authorized up to $571 million in defense support for Taiwan. In addition, the U.S. has sold hundreds of millions of dollars worth of weapons to the island’s government. This comes just a few months after the U.S. approved another aid package of the same amount. Taiwan governs itself as a democracy, sitting…