But he was somewhat disbelieving because the child was really too young, and the technology for lithium batteries differed completely from that of color televisions.
Could the child really possess such profound knowledge at just ten years old? Zhang Li wondered to himself.
However, Zhang Li didn't remain puzzled for long; they soon arrived at the Yu Family residence.
Zhang Li got out of the car first, jogging over to open the car door for Elder Yu, and when Zhang Li followed Elder Yu inside and saw Jiang Mianmian sitting in the living room watching TV, he felt an expected rush of surprise.
Ah, it really was this little girl again!
"Grandpa Yu, Uncle Zhang Li, Uncle Wang Ming," Mianmian recognized all the familiar faces and quickly went over to greet them.
Yu Cheng followed behind her, greeting everyone as well.
"Mianmian, did you make this rechargeable lithium battery?" Zhang Li bent slightly to look her in the eyes as he asked.
Jiang Mianmian nodded, "Yes, I did."