这段英语中有没有错误Dear xxx:How are you these days?I am a Chinese gir

这段英语中有没有错误
Dear xxx:
How are you these days?
I am a Chinese girl.Here is a book for you. I hope it can help you study better.The book which called "Sun Zi Bingfa" in circulation in the Spring and Autumn Period last stage, was a our country ncient times spreads down is most early, most complete, the most well-known military works, held the important status in the Chinese military history, its military thought to the Chinese all previous dynasties strategist, the statesman, the thinker had the very profound influence.
But I'm so sorry that I can't speak Spanish as well as you do.So i couldn't cut it into English. If you don't know Chinese well, you can ask XXX for help.
I hope you can get the achievement better and better.
XXX