evidence: Climbing Mount Everest in winter is always a challenge. You will not only face the low temperature, heavy snow and wild wind, but also the loneliness and fares of the great nature. It does not only call for courage to climb Mount Everest, the highest mountain in the world, in winter, but also needs good preparations. It is not sensible to start out the climbing trip with impulse. Mountaineers should know the basic weather conditions, the best route, necessary documents, diet, accommodation, packing list and some tips for the climbing in winter. Follow the instructions in this guidance, and you will be able to enjoy the majestic Mount Everest in winter. [...] The winter of Mount Everest lasts from November to February. During these four months, the weather of this mountain is affected by the southward migration of the northern hemisphere jet stream to a great degree. This causes the heavy winds and low temperatures in Mount Everest. There is much snow during this season. This forbidden zone of life in winter has an average temperature of -45°C. The wind speed is also quite high. [...] The routes to climb Mount Everest in winter are various. Here we would like to introduce two main good routes for you to choose. One is from Nepal and the other is from Tibet.