At the beginning of the founding of the People's Republic of China, Northeast China was the starting point of China's modernization. Chairman Mao put a lot of heavy industries there, creating absolute star cities of that era, such as Shenyang, Changchun and Harbin.

However, after the reform and opening up, coastal cities like Guangzhou, Shenzhen, Zhuhai, Shantou, Dongguan (Pearl River Delta), Xiamen (Fujian Triangle) and then Zhejiang, Jiangsu and Shanghai all opened up, which also made a new world-class urban agglomeration (Yangtze River Delta) with manufacturing as the main body, and of course made a number of new star cities. Dalian and Qingdao also made their own leaps (around the Bohai Sea) and were selected as sub-provincial cities and cities with separate plans.

The three traditional stars in Northeast China, Shenyang, Changchun and Harbin, faced with the landslide of state-owned heavy industry enterprises and the destroyed environment. I began to fall behind. The environment I know in Harbin seems to be ok now, and the ice sculptures are also beautiful. Changchun is dying, and Shenyang is also bad. It is time to manage and regain the glory of that year.