40 018 Make good friends, Poverty Alleviation Study Group_3

He turned and went back to the yard to continue his carpentry.

"Then I'll explain it to you again tomorrow morning," Bai Lian said, minding her own business.

Ji Heng, "No matter what speed I travel at, the speed of light is always a constant 300,000 kilometers for me. Even if I reach the speed of light and move at 300,000 kilometers, the speed of light relative to me is still 300,000 kilometers."

Listening on the side, Ji Shaorong: "..."

Is his dad prepping for university in his old age?

Bai Lian was somewhat dissatisfied. She put down her schoolbag and followed Ji Heng to the courtyard, "Grandpa, what you said is so vague. Let me explain it to you again @%*(^..."

Bai Lian didn't go back to her room to continue solving problems until she heard the answer she wanted from Ji Heng's mouth.

Ji Shaorong watched the scene in amazement.