I'd like to suggest that ...

Firstly, ... What's more, ...

It is necessary for you to ...

To ... is very important.

Written in the Tang Dynasty when ..., many Tang poems ...

Therefore, reading as many ... as possible is an effective way to understand them.

Hope you'll make great progress in ...

【参考范文】

Dear Robert,

I'm very glad to hear that you're interested in Chinese Tang poetry. Surely it is difficult to learn for a foreigner. So I want to give you some suggestions on how to learn it.

Firstly, to know about the background of Tang poetry is very important. Written in the Tang Dynasty when poetry became an important part of life, many Tang poems are about nature, romance, and even wars. What's more, it is said that someone who learns 300 Tang poems by heart is sure to be able to write poems. Therefore, reading as many Tang poems as possible is an effective way to understand them.

Hope you'll make great progress in learning Chinese Tang poetry.

Yours,

Li Hua