From July 22 to 23, 2021, the 12th International infrastructure investment and Construction Forum (hereinafter referred to as "international infrastructure forum") was held in Macao. 203 business negotiations were held at the forum, which facilitated and witnessed the signing of 11 cooperation agreements, including Nigeria's Niger River comprehensive treatment project, Brazil's hydropower development project, Argentina's wind power project, Angola's copper mine project and Trinidad and Tobago's petrochemical storage and transportation project, with a total amount of more than US $2.3 billion.