The Songliao Plain is a large, flat region located in northeastern China, primarily in the provinces of Heilongjiang and Jilin. It covers an area of about 300,000 square kilometers and is known for its fertile soil, making it an important agricultural zone. The plain is characterized by its rich deposits of coal and petroleum, contributing to the local economy. The Songliao Plain is also home to several rivers, including the Songhua River, which plays a crucial role in irrigation and transportation. The region experiences a temperate continental climate, with distinct seasons that support diverse crops such as rice, corn, and soybeans.