Is the industrial construction in Northeast China mainly invested by Japan or the Soviet Union?

Pre-Qing period: The Northeast became the largest industrial zone in China, which was invested by Russia, surpassing Shanghai.

Puppet Manchuria: Japan invested in Northeast China, which became the largest industrial zone in Asia, surpassing Tokyo.

after liberation: with the aid of the Soviet Union and domestic investment, the northeast economy accounted for 85% of the country, and heavy industry accounted for 98% of the country at its peak.

Reform and opening up: After 198s, the Northeast hardly got much investment, and its development began to lag behind. The old industrial entities expanded their production, but the old industries were basically heavy industries, and the Northeast economy began to falter and was gradually surpassed by the mainland.

In recent 1 years, the international economic situation was not good, China's manufacturing exports collapsed, and the orders for labor-intensive products were taken away by Southeast Asia, which caused the mainland economy to shift to a financial virtual economy, and the demand for resources dropped sharply, resulting in unsalable products of heavy industries in Northeast China, and the Northeast economy relied heavily on heavy industries, so it fell to the end and never recovered!