There were writing materials in the private room.
King Jin picked up the brush and wrote a contract for Shi Qingluo to read.
Shi Qingluo did not stand on ceremony and suggested a change.
She wanted to include what she had just said. Other than exchanging for the cement road, she also wanted to include the matter of them using the formula to make paper too.
King Jin didn't reject her suggestion and wrote another copy according to her wishes.
Shi Qingluo signed her name and pressed her thumbprint on the contract.
King Jin used the seal that he always carried with him.
After the ink had dried, Shi Qingluo folded her copy and placed it in her pouch. She then took out a stack of paper.
"These are the formulas to modify the paper making process. You can create paper with different textures. Your Highness, you can try them all.