This course introduces the physical geographical background and historical formation process of the Guangdong-Hong Kong-Macao Greater Bay Area. Any phenomenon of human geography is produced by the superposition of human activities in the corresponding physical geography background. Therefore, the course first introduces the geographical background of the Greater Bay Area, mainly the shape of the topography of the region where the Greater Bay Area is located by the Pearl River system, forming a complex estuary delta, namely the Pearl River Delta plain. Then, it introduces several important waves of population migration since the Qin Dynasty, which brought reclamation and land development to the tidal area and river network area of the Greater Bay Area, thus forming the agricultural production system of numerous mulberry-based fish ponds or sugarcane-based fish ponds. The migration of a large number of people also brought about the formation of villages and towns. On this basis, it formed the famous silk and silk processing industrial base in China -- the southern Silk industrial base. In addition, Lingnan was also a place of tea and porcelain production, making it a key area of the Maritime Silk Road. Because of the large number of people and goods exchanges, this region has become the key region, or even the only region, for cultural exchanges between China and the West. And because it was far away from the central dynasty, it was once a place where officials were exiled. A large number of officials were relegated to Lingnan, leading to the rise of culture and education. Because it was far away from the central dynasty and separated by rivers and mountains, Lingnan was once a relatively safe reserve. This is why it attracts a large number of people from the north to move south. Also, because it was far away from the central dynasty, this remote region was repeatedly selected by the central government as a region for various experiments to avoid the negative effects of experiments on the stability of the regime. At the same time, its international and revolutionary nature is also an important local feature. Because of its long and excellent bay and port conditions, it was chosen as the port city of the colonies by the western colonial countries, and then international port cities such as Hong Kong and Macao emerged. Through the reform and opening up, the Pearl River Delta has been greatly developed from a former Lingnan water town into an internationally famous metropolitan area. In the context of the new era, the Guangdong-Hong Kong-Macao Greater Bay Area concept has been proposed, in order to enable the region to develop better and play a greater role in driving the development of the whole country. The link between this region was water in the past, now and in the future, it may be industry chain, value chain and concept chain. In conclusion, the interaction between people and the geographical environment in the Greater Bay Area shapes and deduces the ever-changing human geography. Multiple conquests, multiple migrations, including multiple internationalizations. People in different periods moved into this area, and their interaction with the land and aborigines created the local culture and lifestyle here, thus promoting the formation and evolution of human geography here. The first 30 minutes of the video are mostly lecture, talking about the above mentioned contents. In the last 6 minutes, the course development team took aerial and ground video, trying to present the scenery and lifestyle of the water town in the Greater Bay Area.