When purchasing sweet potato seedlings, the enthusiastic grandmother, upon hearing that the couple specifically came to Yanqing to farm, sympathized and liked them so much that she picked some excellent sugarcane seedlings and even gave them ten kilograms of sweet potatoes.
After buying the seedlings for planting, the couple checked various materials to identify the types of sweet potato seedlings they had on hand. It turns out they were quite lucky; the sweet potatoes they bought were good varieties.
The sweet potato seedlings they bought from the old lady who roasts sweet potatoes were an early-maturing variety, a new kind of roasting potato developed by a domestic agricultural science university, including Japan's golden white potato, which has an amazing yield per mu. The last type was a short-vine purple sweet potato, a rare kind among sweet potatoes.