Hi Jack,
Greetings from Sophie, Top China Travel!
Thank you very much for your question about the tour to Xinjiang as below,
My interest: 5-7 days Xinjiang Tour. Time 12-28 February (what would be the best time?).
我学习汉语, 请你有会说汉语的导游:-) ?
Traveling Time
Generally speaking, it is suitable to visit Xinjiang from May to October every year, but the best time should be July, June and September.
If you travel to Xinjiang for beautiful natural view, we suggest you travel in September, which is the best time to visit Kanas, Hemu, Bai Ha Ba, Baisha Lake, Cocotsuo Lake. All the birch trees turn golden and aspen trees turn red, but the sturdy pines keep green. It looks really beautiful and colourful.
If you travel in May and June, it is suitable to visit grassland, where you could see flowers, swans and herdsman. It is suitable to climb mountains or hiking in July and August. The grapes are ripe in Turpan in the middle of August. It is the best time to enjoy the fruits in Xinjiang.
Therefore, if you travel to Xinjing at the end of Feb, it will be not a good idea. It is too cold to travel in this area and you will not see the best view. If possible, I suggest you change a traveling date.
Besides, may I know how many of you will travel together? Since the distance between spots in Xinjiang is a bit far, the car cost will be higher, which will make Xinjiang tour is more expensive than the tours in Beijing, Shanghai. I suggest you travel with at least one or two friends to reduce your traveling cost.
Guide service
Please kindly be advised that almost all the English speaking guides in China are local Chinese. Therefore, you do not need to worry about the language. They can speak Chinese (mandarin). When you meet the guide, you could request him or her to communicate with you in Chinese if you want to practice your Chinese.