Seniors swimming in a frozen Beijing (8 images)

Chinese senior citizens swim in a semi-frozen lake in Beijing January 23, 2011. Cold temperatures and freezing rain could create major headaches for the energy sector in China, energy analysts said. UPI/Stephen Shaver

Chinese senior citizens swim in a semi-frozen lake in Beijing January 23, 2011. Cold temperatures and freezing rain could create major headaches for the energy sector in China, energy analysts said. UPI/Stephen Shaver

Chinese senior citizens swim in a semi-frozen lake in Beijing January 23, 2011. Cold temperatures and freezing rain could create major headaches for the energy sector in China, energy analysts said. UPI/Stephen Shaver

Chinese senior citizens swim in a semi-frozen lake in Beijing January 23, 2011. Cold temperatures and freezing rain could create major headaches for the energy sector in China, energy analysts said. UPI/Stephen Shaver