March 29 is the second day of a new round of segmented and grid nucleic acid screening in Shanghai. A staff member of a milk station in a district of Shanghai said: "the supply of bright fresh milk in the city has been stopped." "The whole city will stop fresh milk logistics tonight." At 8:47 p.m. on the 29th, Bright Dairy & Food Co.Ltd(600597) official microblog said that according to the requirements of a new round of nucleic acid screening in Shanghai, Bright Dairy & Food Co.Ltd(600597) some regional product distribution was affected, and there was no suspension of product distribution in the whole city.