Progressive Complex Sentence “……，更……”
In the Chinese pattern “……，更……” (..., gèng...) the second clause strengthens the meaning of the first.
That is, the state or idea in the second clause is a step stronger.
Basic Structure
first clause，更 + second clause
In English:
…, and even more …
or
…, still less / still more …
Examples
我还没想好学什么，更没想好去哪个国家。
I haven't decided what to study yet, still less which country to go to.
Structure
还没想好学什么 + 更没想好去哪个国家
haven't decided what to study + still less which country to go to
还没想好 — haven't worked out yet
学什么 — what to study
更没想好 — have worked out even less
去哪个国家 — which country to go to
Here the second clause strengthens the meaning of the first.
想提高中文水平要多听多看，更要多说多练。
To raise your level of Chinese you need to listen and read more, and even more than that, to speak and practise more.
Structure
要多听多看 + 更要多说多练
need to listen and read more + and even more, to speak and practise more
提高中文水平 — to raise one's level of Chinese
多听多看 — to listen more and read more
更要 — even more, one needs to
多说多练 — to speak more and practise more
Here the second clause is presented as mattering even more than the first piece of advice.
来中国学习，我学会了中文，更了解了中国文化。
Coming to China to study, I learned Chinese — and came to understand Chinese culture even better.
Structure
我学会了中文 + 更了解了中国文化
I learned Chinese + and understood Chinese culture even better
来中国学习 — to come to China to study
学会了中文 — learned Chinese
更了解了 — came to understand even better
中国文化 — Chinese culture
Here the second outcome runs deeper than the first.
Quick Rule
……，更……
Meaning: the second clause strengthens the meaning of the first.
Examples:
还没想好学什么，更没想好去哪个国家。
Haven't decided what to study, still less which country to go to.
要多听多看，更要多说多练。
You need to listen and read more, and even more to speak and practise more.
我学会了中文，更了解了中国文化。
I learned Chinese, and understood Chinese culture even better.