Detailed Solution:
The correct answer is “It is leading producer of soyabean”.
1) Population density (2024): Macau (China) > Monaco > Singapore > Hong Kong (China)
2) World's largest producer of soybeans: Brazil > USA > Argentina > China > India . Madhya Pradesh is the largest soybean-producing state in India.
3) Huang He or the The Yellow River is also called "Sorrow of China".
4) Shanghai is considered China's largest economic center.