What does "short spring" mean in the development of national industry in modern China?

During World War I, European powers were too busy to look east, temporarily reducing their capital exports to China, relaxing their economic aggression against China, and exporting less capital and commodities to China. Objectively, it provides favorable conditions for the development of Chinese national capitalism.

So China's national industry and commerce got a chance to develop and had a short spring. From 19 12 to 19 19, there are more than 600 new factories in China, with the newly added assets exceeding10.3 billion yuan, among which the textile industry has the fastest development. Zhang Jian's Nantong Sheng Da Group made a profit during the period of 192 1 more than 6 million yuan. Such a rich profit is unprecedented in the history of national industry in old China.