Yabla video uses of 载体

shì
我们 wǒmen
中国人 Zhōngguórén
自己 zìjǐ
de
shì
承载 chéngzài
信息 xìnxī
de
载体 zàitǐ
It belongs to us, the Chinese people, and is the carrier of information.
shì
承载 chéngzài
信息 xìnxī
de
载体 zàitǐ
yòu
shì
图形 túxíng
It carries information and it's also pictographical.
jiā
shì
hěn
重要 zhòngyào
de
载体 zàitǐ
duì
ba
home is a very important carrier of these, right?
但是 dànshì
他们 tāmen
huì
不断 bùduàn
de
告诉 gàosu
shuō
就是 jiùshì
载体 zàitǐ
But they also keep telling me, "You're a carrier [of our story]."
中国人 Zhōngguórén
dōu
shì
yòng
什么 shénme
lái
作为 zuòwéi
jiù
de
载体 zàitǐ
de
ne
what did the Chinese use as a, like, medium for written communication?