Yabla video uses of

而且 érqiě
hái
zài
上面 shàngmian
biān
等级 děngjí
jiǎ
bǐng
dīng
and those were given grades: A, B, C, D.
xiǎng
请问 qǐngwèn
ò
为什么 wèishénme
这个 zhège
bìng
中间 zhōngjiān
jiā
de
这个 zhège
shì
bǐng
May I ask, why is this character "Bing" (meaning 3rd heavenly stem) placed in the middle of this "Bing" (illness) character?
所以 suǒyǐ
bìng
底下 dǐxia
jiā
le
转注 zhuǎnzhù
jiā
le
bǐng
So, under the "Bing" (illness) character, we transfer, add the "Bing" (3rd heavenly stem) character.
bǐng
zài
古代 gǔdài
我们... wǒmen...
上次 shàngcì
我们 wǒmen
jiǎng
guò
zuàn
huǒ
ma
"Bing" in ancient times... we discussed last time. -Drilling wood to make fire.
然后 ránhòu
gěi
yòu
这个 zhège
本意 běnyì
gěi
jiā
le
bǐng
we then add the character "Bing" to its original meaning.
甲乙 jiǎyǐ
bǐng
dīng
gēng
xīn
rén
guǐ
Jia (one), Yi (two), Bing (three), Ding (four), Wu (five), Ji (six), Geng (seven), Xin (eight), Ren (nine), Gui (ten).