What shape is the screw of the back cover of bcd223mt Xinfei refrigerator?

Plum blossom form. According to Zhongguancun online website, the plum blossom screw on the back cover of Xinfei refrigerator should be a plum blossom-shaped screwdriver. Xinfei refrigerator returned to the first-line camp of domestic refrigerator industry, and Fang Ming's humidification control patent of Xinfei refrigerator won the 14th China Patent Excellence Award jointly awarded by China National Intellectual Property Administration and the World Intellectual Property Organization, becoming the only refrigerator invention patent in China.