7921
With plans for large systems in northeastern Zhejiang , Jingjinji , and Yangtze River Delta areas .
 Zhejiang, Jingjinji, Yangtze River Delta
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Zhejiang, Jingjinji, Yangtze River Delta