新中国成立后,葡萄牙政府尚未与我国建交。从内地去澳门,经过拱北海关,迎面有一座牌坊式的建筑,这便是著名的关闸。古关闸是明代的中国政府修建的,目的是为了限制澳葡再向北扩张,关闸每月只开放6次,仅仅是为了从内地向澳门输出粮食,而平日就用封条封住。新中国成立后,由于历史 After the founding of New China, the Portuguese government has not established diplomatic relations with our country. From the Mainland to Macao, after Gongbei Customs, facing a arch-style building, which is the famous barrier gate. The ancient gateway was built by the Chinese government in the Ming Dynasty in order to limit the further expansion of Macao and Portugal. The gate of the gateway is only opened six times a month for the sole purpose of exporting food from the Mainland to Macao and is sealed by a seal on weekdays. After the founding of New China, due to history