"A Zheng, don't worry. The method of making honeycomb coal is simple. I will ask the craftsmen to try it this afternoon."

"Okay, thank you Yue Ning."

"Yeah, take a break."

Chu Yuening pressed her index finger against the man's thin lips to stop him from talking about anything else.

Looking at the woman's sleepy face, Ying Zheng stopped talking and embraced her to enjoy a quiet nap.

In the afternoon, Chu Yuening first drew the blueprints of the honeycomb coal machine and coal stove, and handed them over to the craftsmen to build.

After the creation was completed, Chu Yuening found another open space and ordered people to pile up the coal ash and add water to infiltrate it. After a quarter of an hour, stir it until it could be shaped, and finally use a honeycomb coal machine to press it out.

It is the hot summer now, and the honeycomb coal only takes one day to dry under sufficient sunlight.

Chu Yuening looked at the honeycomb coal that was almost the same as the modern ones, nodded with satisfaction, and generously rewarded the craftsmen.

When Ying Zheng arrived, Chu Yuening had already asked the palace maids to light the coal balls and put them into the stove.

"A Zheng, look, this is honeycomb coal. It can burn for about three hours."

"It can cook and keep warm at the same time, isn't it extremely convenient?"

Hearing that this small coal ball could burn for a long time, a hint of surprise flashed in Ying Zheng's eyes, and then he spoke happily.

"Indeed, from now on, the people of Guizhou won't have to chop wood anymore."

"I will send someone to open the factory tomorrow."

"Well, then, A Zheng, let's go back to the palace."

The weather was already hot, and with the heat from the coal stove, there were already beads of sweat on Chu Yuening's little face.

Realizing this, Ying Zheng took out a handkerchief to wipe the woman's sweat, then took her hand and left quickly.

"Eh? A Zheng, isn't this the direction back to Qinian Palace?"

"Well, Yue Ning, if you have nothing to do, come to Zhangtai Palace and accompany me."

"But..."

"I have asked the Food Bureau to prepare an ice bowl."

"Well... I'll have two bowls then."