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In Sun Yang's case, the testing assistant was a construction worker who claimed that "no one taught

According to the latest report of Xinhua news agency, one of the three IDTM testers in Sun Yang's case said that he was not a trained doping Testing Assistant (DCA), but a construction worker. The assistant, who asked to remain anonymous, said, "I am a construction worker. I am busy working every day. No one has taught me how to conduct doping tests, and I have not received relevant training."