Former women’s badminton world champion Gong Ruina receives a certificate from Tan Yunlong, director of the competition department of China Badminton Association, at Futian Cultural Hall yesterday. Gong will be the ambassador of the Shenzhen leg of the 2018 First National DXNBZ Junior Badminton Tournament. The matches of the Shenzhen leg will be held at Futian Sports Park from Aug. 10 to 12.