At No. 2 Henan Street in Qiqihar, the Ang'angxi Site Museum stands directly over the ancient Tengjiagang Site. Established in 2002, it is Heilongjiang Province’s first institution dedicated entirely to prehistoric culture. The building preserves the history of a 7,000-year-old Neolithic civilization that sustained itself through fishing and hunting along the Nenjiang River.

The museum complex covers 11,000 square meters, with the main structure occupying 1,850 square meters. A comprehensive renovation in 2010 transformed the interior into a highly immersive environment. The primary exhibition, 'The Cradle of Northern Fishing and Hunting Civilization,' spans two main halls. At its center lies a circular projection space designed to mimic the conical reed-and-branch dwellings of the region's ancient inhabitants. Visitors sitting beneath this dome experience a multi-sensory recreation of prehistoric life. The sounds of bird calls, flowing water, and running animals fill the room. Visual projections simulate shifting weather patterns and the daily routines of early humans crafting stone tools and casting nets.

Surrounding this central space are displays housing over 3,000 artifacts. The collection includes more than 300 highly valued cultural relics, featuring finely pressed microliths, bone implements, and pottery. These objects provide the foundation for studying the ancient fishing and hunting economies of the northern Chinese grasslands. Interactive touchscreens and 3D displays allow visitors to examine the craftsmanship closely and simulate the repair of ancient ceramics.

The museum also honors the origins of modern Chinese field archaeology. A dedicated 152-square-meter wing serves as China’s only memorial hall for Liang Siyong. In September 1930, Liang traveled to this remote area and conducted a brief, intense excavation before the freezing autumn weather forced him to stop. His work formally identified the Ang'angxi Culture. Today, a bronze statue of Liang stands among his original field notes, English manuscripts, and personal belongings, many donated by his daughter.

As a National Third-Grade Museum, the facility draws over 50,000 scholars and tourists each year. It functions as a prominent educational landmark along the historic Chinese Eastern Railway route. Visitors leave with a clear understanding of the ancient people who once lived along the Nenjiang River and the dedicated archaeologists who brought their history to light.