The 16th case was imported from abroad, male, 18 years old, Chinese nationality, residing in Carlyle, UK. The patient arrived at Tianjin Binhai International Airport on March 25 on a flight (Su204) from Moscow with a temperature of 36.8 u2103 and declared no symptoms. After customs inspection, it will be transferred to the isolation point of Ruida Spring Hotel, Nankai District, Tianjin. On the 26th, the results of throat swab nucleic acid test were positive, and it was confirmed by Tianjin expert group that the cases were imported from outside Tianjin, and the classification was to be determined. Now it is transferred to Haihe hospital, and the epidemiological investigation is in progress.