New York Times: Each morning Tian Wengui emerges from the home he makes under a bridge here, two large sacks slung over his shoulder. Through the day, and well into the night, he scours garbage cans for soda bottles, soy sauce containers and cooking oil jugs. Selling the refuse to one of Beijing’s ubiquitous recycling depots, Mr. Tian can earn $3 on a good day. But good days are getting harder to come by. Since Mr. Tian migrated from Sichuan province, the multibillion-dollar recycling industry …