Longjiang Grand Stage Duet Theatre. According to Baidu map, Harbin Errenzhuan Theater is located about130m south of Jinxiu Hotel, Wenhua Street, Longjiang County, Qiqihar City. The name of the theater is Longjiang Grand Stage. As of March 26th, 2024, the duet theater of Longjiang Grand Stage is the only duet theater in Harbin. Harbin, the capital of Heilongjiang Province, a sub-provincial city, a megacity and one of the central cities in Northeast China, is the transportation, politics, economy, culture and finance center in Northeast China, and also the megacity with the largest land jurisdiction area and the third registered population in China Province. It is located in the northeast of China Northeast Plain and the south of Heilongjiang Province, and is an important manufacturing base of the country.