答案：Dear David,
I’m very glad that you will come to visit China. There are four distinct seasons in China: spring, summer, autumn and winter.
In spring, the weather is usually warm and pleasant, with flowers blooming everywhere. It's a good time to go sightseeing. Summer is hot and sometimes rainy, especially in southern areas. You can enjoy many kinds of fruits and go swimming. Autumn is my favorite season. The weather is cool and dry, and the leaves turn golden. It's perfect for traveling. Winter is cold, and it often snows in northern China, where you can make snowmen and go skiing.
I think the best time to visit China is autumn. The temperature is comfortable, and you can experience the beautiful scenery of this season. You should bring different clothes according to the season. If you come in autumn, remember to take a jacket because it might get a bit cold in the evening.
Looking forward to seeing you soon!
Yours,
Li Hua