It was November when Cheng Shunguo, 52, realized his sweat was turning green. He observed that his underwear and bed sheets were all green, and even the water in the shower. Even though he felt no uneasiness, he went to the hospital because he was worried about his condition. The green sweat would just not stop. Doctors cleaned his armpits but it took only 10 minutes for his sweat to turn a piece of white gauze green again.

They have carried out blood tests on Cheng, but found everything to be normal.The hospital has admitted that they cannot find a cause for Cheng's condition.

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