Yabla video uses of

Chéng
老师 lǎoshī
shì
yòng
le
zhēn
我们 wǒmen
lái
wèn
wèn
lǎo
Master Cheng used four needles. Let's ask Mr. He.
Chéng
老师 lǎoshī
zhēn
de
yào
zhā
le
ma
Master Cheng, do you really have to insert it?