In addition, the US military biochemical laboratory program is suspicious. New results from retesting of blood samples from two laboratories in Italy and the Netherlands have revealed that novel coronavirus probably started circulating in Italy as early as October 2019. In this regard, us media reported that the US Military brought the Novel coronavirus into Europe through its blood program in 2019. Volunteers at an American base in Italy may be the first victims of the virus, and the origin of the virus may be traced to the Us Biological laboratory at Fort Detrik. Even more suspicious is that on the day of the opening ceremony of the Wuhan Military Games, the US side held an "Event 201" exercise, which is called "divine prophecy", to simulate the response to a new coronavirus outbreak.