“上天入地”曾是人类的梦想。而今,“上天”的梦早已实现,人类的足迹留在了太空,而“入地”似乎“要比登天还难”。2001年8月,中国的“入地”计划正式开始行动——5000米深的大陆科学钻探工程在江苏省东海县毛北镇开钻。 “Heaven into the earth” was a human dream. Today, the dream of “ascension” has already been realized. The human footprint has remained in space. However, “entering the land” seems “more difficult than going to heaven.” In August 2001, China’s “land readjustment” project officially started its operation. The 5000-meter-deep continental scientific drilling project was started in Maobei Town, Donghai County, Jiangsu Province.