Walking in Daqing, Heilongjiang, there are "oases" dotted in cities such as parks, squares, and greenways; opening windows and walking out of your house can always make you feel full of greenery."The beauty of Daqing exceeded our expectations." Zhu Hongwei, a tourist from Beijing, said,"It turns out that this oil city is not just an 'industrial trend', but also has birds in the wetlands and has a very good ecology."Daqing, as the "Beautiful China, Green Longjiang Pioneer Area", has accelerated t