Mysteries of a Railways Minister's Confidant

The owners of a well-kept home with a manicured lawn at 668 Pierre Road, Walnut, California, are somewhat of a mystery to the people living nearby.

Until early this year, local property records identified the owners as Zhang Shuguang, 55, formerly a high-level government official working for the China Ministry of Railways, and his wife, a businesswoman named Wang Xing.