Look out, Starbucks: Luckin Coffee, the biggest coffee chain in China, is opening its first U.S. locations

Luckin Coffee opens its first U.S. locations. The China-based coffee chain has grown to outnumber Starbucks in its home country. It enters the U.S. market at Starbucks is in the midst of a turnaround effort. While the trade wars are capturing most of the headlines, another battle is brewing…