What are the precautions for traveling to the three northeastern provinces in September?

Precautions for tourism in the three northeastern provinces: the catering in the northeast is relatively heavy. Please inform the tour guide in advance if you have any special requirements. Please prepare light sneakers for Changbai Mountain. Moreover, the temperature difference under Changbai Mountain is relatively large. Pay attention to your own safety when going up the mountain. In the north, it's early morning. Please close the curtains at night. The water quality of Wudalianchi is hard. It is best not to drink local water during Wudalianchi to avoid adverse effects. Travel to Mohe, because the temperature difference in Mohe is very large, the highest temperature is about 26 degrees during the day and the lowest temperature is about 6 degrees at night. So please prepare long-sleeved clothes and add and subtract clothes in time. Moreover, there are many mosquitoes in the Arctic village, so prepare some medicines. It's cloudy or sunny, so prepare rain gear. With strong ultraviolet rays and dry climate, please prepare skin care products.