Meng Aixi has lived in the small shabby house of Grandma Meng's house for three days. During the past three days, she was not in a hurry to find out more information. Instead, she spent most of her time on observation - observing the daily life of Mengjia Village, observing the production methods here, and thinking over and over again in her mind: What needs to be solved now is not only food and clothing, but also the "core competitiveness" that has taken root in this era.