内容包括：1）简单介绍太极拳。例如：是中国传统武术的一种；大约400年历史；全球有3亿太极拳练习者，等等。2）给Chris几条有关学习太极拳的建议。
注意：1）词数100左右；
2）可以适当增加细节，以使行文连贯。
可能用到的词汇：Tai Chi太极拳；martial art武术：
Dear Chris,
Li Hua
I am very glad to know that you are willing to learn Tai Chi, which is a kind of traditional Chinese martial art with a history of about 400 years There are about 0.3 billion players throughout the world.
