Yabla video uses of

《钢铁 "gāngtiě
shì
怎样 zěnyàng
liàn
chéng
的》 de"
shì
唯一 wéiyī
拥有 yōngyǒu
de
běn
课外 kèwài
shū
"How The Steel Was Tempered" is the only book she owns outside of school