Which region has the license plate with the prefix 'Hei L'?

[VonAubrey]

The license plate with the prefix 'Hei L' belongs to the Songhua River region. Additional information about the Songhua River is as follows: 1. The Songhua River is a river in Northeast China and the largest tributary of the Heilongjiang River. 2. During the Northern and Southern Dynasties, it was called 'Nan Shui,' and during the Liao and Jin dynasties, it was referred to as 'Huntong Jiang,' a massive river flowing northeast into the Tartar Strait. 3. After the founding of the People's Republic of China, it was designated as a tributary of the Heilongjiang River. It is now the largest right-bank tributary of the Heilongjiang River. 4. In the Sui Dynasty, it was called 'Nan He,' in the Tang Dynasty 'Na Shui,' during the Liao and Jin dynasties 'Ya Zi He' and 'Huntong Jiang,' and in the Qing Dynasty 'Huntong Jiang' and 'Songhua Jiang.' The Songhua River flows through Jilin and Heilongjiang provinces; its basin covers an area of 557,200 square kilometers, spanning the four northeastern provinces of Heilongjiang, Jilin, Liaoning, and Inner Mongolia; its annual runoff is 76.2 billion cubic meters.