Yabla video uses of

于是 yúshì
jiù
取出 qǔchū
随身 suíshēn
dài
de
火石 huǒshí
shāo
zhe
le
大树 Dàshù
身上 shēnshang
de
裂缝 lièfèng
Therefore, he immediately took out the flint he carried with him and set fire to the large tree's crevices.