Greater Bay Area Cup Guangdong-Hong Kong-Macao Financial Mathematical Modeling Competition cannot be refunded. The Greater Bay Area Cup Guangdong, Hong Kong and Macao Financial Mathematical Modeling Competition was jointly organized by Guangdong Institute of Industrial and Applied Mathematics, Wanlian Securities Co., Ltd. and Guangdong, Hong Kong and Macao Applied Mathematics Center. During the registration period, no refund is allowed after the registration fee is paid.