Here is the story of a special plant. Because of this plant, the population at that time increased a lot.
Long ago, there was a man named Chen Zhenlong and he was born in Fujian. Then he went to Luzon island for work. There were many waterways to Luzon, So he took a boat to get there. In Luzon, Chen found that the local people ate sweet potatoes, and they could easily plant them. He wanted to bring the sweet potatoes back to his hometown, because they might change the situation of the food shortage(短缺). But it was not an easy thing. Chen was learning how to grow sweet potatoes while he was thinking about how to bring them back. One day he put a potatoes vine(藤) into the absorbent rope(吸水绳) and then brought it back to his hometown. After getting home , Chen began to plant sweet potatoes and finally he was successful.
The weather was bad in Fujian and many people didn' t have enough food. Chen told the government that the sweet potatoes could help people. So the government let people plant sweet potatoes. After that, the sweet potatoes became a common plant in China. At that time, 85% of the people depended on sweet potatoes for food. People then had enough food and the population increased quickly.
