A few days later.

The ugly man got up from the bed and stretched comfortably. Looking at his grandson who was still sleeping on the couch, his heart was full of joy. After using this ondol, he couldn't leave it completely. At first, he thought that this kang would be a waste of firewood, and he thought that there was not so much firewood at home. But later, Cao Xiu came up with an energy-saving stove, and it was almost the same as before.

At night, as long as the fire is blocked by a wooden plank, the fire kang will be warm all night. since

"Da Qin: Picking Up the Eight-Year-Old First Emperor at the Beginning" Chapter 199 The Scene of Oak Yang, Change is in the middle of the hand, please wait a moment,

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