* Photo essay: https://reut.rs/3n9UaAQ (Updates hed, adds comment from Border Patrol) By Echo Wang and Mica Rosenberg FRONTON, Texas, April 28 - Lihua Wu's journey to the United States started when she scrolled past the words "The Route", one of several common hashtags on Douyin, the Chinese counterpart of TikTok, advising migrants on the irregular overland trek across Latin America to the United States, also known online as "the Big Beautiful." By the time the single mother and her five-year-old daughter were apprehended by U.S. Border Patrol on a dirt road near the U.S.-Mexico border just before midnight on April...