Tong, pronounced Tong

Radical: Li UJFF

Explanation:

1. Child: Child ~. ~ work. ~ rumors. ~ words. ~ heart. ~ fun. ~ really.

2. Underage servants: books ~ children.

3. Unmarried: ~ male. ~ female. ~ Zhen.

4. Immature: ~ Cattle (calf without horns).

5. Baldness: ~ Mountain. Head ~ (bald metaphor, such as "missing teeth").

6. Ancient "pupils", pupils.

7. Last name.