Yabla video uses of 洞窟

于是 yúshì
便 biàn
zài
经过 jīngguò
de
崖壁 yábì
shàng
开凿 kāizáo
le
第一 dìyī
洞窟 dòngkū
So, he dug the first cave in the cliff he passed by.