The Bitmain public account, Ant, issued the “Announcement on the Illegal Transfer of the Mining Machine Managed by Zhenglan Flag Mine” before the sale. According to the announcement, from the evening of July 15 to 16, 2020, a subsidiary of Bitmain Group, Inner Mongolia Maker Cloud Computing Co., Ltd., hosted about 10,000 mining machines at the Zhenglan Banner Mine in the Inner Mongolia Autonomous Region. Ren Gang, Wang Wei and others from the mining center were illegally transferred. The company has reported the incident to relevant departments and reported to the public security organs. At present, the whereabouts of the mining machine involved is unknown, and the company will go all out to recover it. In the above incidents, the illegally transferred mining machines involved were all Ant mining machines, including S17 Pro/S17/T17/S15/T15/S9 Hydro series mining machines, Z11 series mining machines, and other small currency mining machines and Internal test prototype.