Pan Shiyi, real-estate tycoon, chairman of SOHO China and renowned blogger, rode the Shanghai Metro and tested concentrations of PM2.5 in 14 spots across the city, where levels ranged from 36 to 54 micrograms per cubic meter.
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Pan Shiyi, real-estate tycoon, chairman of SOHO China and renowned blogger, rode the Shanghai Metro and tested concentrations of PM2.5 in 14 spots across the city, where levels ranged from 36 to 54 micrograms per cubic meter.