The fourth part serves as the research work on Jinggang Mountain tourism cluster. 第四部分為井岡山旅遊產業集群化發展實證研究。
The ability to defend the Jinggang Mountain base was important because the base served as a haven for the Red army. 防衛井岡山根據地的力量至關重要，因為這塊根據地對紅軍而言是一處良好的避難所。
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