Gu Xin thought that the jade fish had turned into a fish-shaped mark, so she wanted to go to the small waterfall where the fish were released to see if she could encounter any small fish.

She made up an excuse, saying there was a small pond over there with fish in it, and that she could try her luck and maybe catch some.

Gu Hui and Gu Nian naturally agreed.

After putting the bundles of firewood into the straw basket, the four of them headed towards the small pond.

Gu Nian had already planned to sacrifice herself by wading into the water in the dead of winter to catch fish and make soup. However, when she got there, she discovered a cave and found something she wanted at the entrance.

"This, this, Sister Huihui, Xinxin, Sisi, come help me pick this!" Gu Nian was quite excited.

The three stepped forward and looked at Gu Nian with puzzlement.

"This thing is really good! I've been working on something lately, and I really need it. Can you help me out, sister?" Gu Nian explained simply.

The plant that Gu Nian discovered is called *Populus heterophyllus*, which the people of Sanchakou Village call the three-leaf tree. It can be used to extract alkali.

With this, Gu Nian won't need wood ash anymore.

She never expected that such a plant would grow here. There was no use in thinking too much about it. The world her nephew, that academic failure, had created was illogical. As long as it was useful, that was enough.

"Gu Nian, what have you been thinking about lately? Is it food? Are you planning to use these leaves to make food?" After picking enough, Gu Hui asked curiously.

Gu Nian stared at the side of the small pond, seemingly not having heard, so Gu Xin explained, "No, Sister Huihui. My sister is making something to use for washing and rinsing, sister..."

"Ah! Mint! Mint!" Gu Nian's excited voice interrupted Gu Xin.

The three sisters were startled by Gu Nian's appearance.

Then Gu Nian ran to the pond and started picking grass again.

The three followed.

"No, no, we can't pick them all. Sisters, let's dig them up and take them back to plant." Gu Nian thought of the vegetable garden at home. It was such a good place, and it would be a waste to leave it unused for growing vegetables.

"Gu Nian, are all these things you've made really useful?" Gu Hui asked again, expressing her confusion.

"Really. Sister Huihui, you don't believe me? If I had told you before that the food I make could make money, you definitely wouldn't have believed me either! So, please help me!" Gu Nian said firmly.

Gu Hui considered for a moment, then said, "Sisi, come with me to get the basket."

"Sister Huihui is so kind!" Gu Nian exclaimed loudly after being taken aback.

Gu Hui paused for a moment, then led Gu Si back to where they had been to get the basket.

"Sister, should we take this grass back and grow it in our field?" Gu Xin squatted down and asked while helping.

"We don't need to raise them in the ground, we'll raise them in pots with mud from the vegetable garden, and raise more of them. Xinxin, may you bring me good luck! I love you to death!" Gu Nian really wanted to give Gu Xin a big kiss~.

"Hehehe, okay!" Gu Xin laughed foolishly.

My older sister doesn't know it's because of the well water! She thought it was a vegetable garden.

However, if you water the grass with well water, it will grow.

A short while later, Gu Hui and Gu Si returned, carrying two empty small baskets.

One backpack contained poplar trees, and the other contained mint plants.

After the four sisters finished getting ready, they left the small pond.

They had forgotten about catching fish, but Gu Xin stared at the water for a while, and when she didn't find any fish, she felt a little disappointed.

She planned to come quietly sometime to tell the little carp about the changes in the jade fish.