babble out one's first speech sounds
Yayaxueyu, a Chinese idiom, Pinyin is y á y á Xu é y ǔ, which means to describe a baby babbling to learn from adults. It comes from the Tang Dynasty Sikong Tu's "barrier car text".
The idiom comes from Tang Dynasty Sikongtu's "the text of a disabled car": "two women learn to speak, five men learn to fly."
babble out one's first speech sounds
the southern mountain might be moved off - nán shān kě yí
harass the people and waste money - láo mín fèi cái