A truce in the U.S.-China trade war seemed close. The leaders of China and the United States were meeting to discuss a fix. And then arrests started. It got even more confusing, so today, we call up our man on the ground in Shanghai to make sense of it all. The key to understanding the latest turn in the trade war centers around a giant company most Americans haven't heard of called Huawei. Its rise traces the rise of China's economy and Chinese-style capitalism.