He was living in Beijing. As a Chinese-speaking westerner who lived there for a year, I can tell you the air pollution alone is enough to do it. While reports s

He was living in Beijing. As a Chinese-speaking westerner who lived there for a year, I can tell you the air pollution alone is enough to do it. While reports seem mixed on whether he loved his gig like you did, I imagine his family's culture shock was probably creating a great deal of stress as well similar to how you described.