I don&;t know when you will go. The ice and snow world, the snow fair and the ice lantern garden party in Harbin will basically open around Christmas and New Year&;s Day. If you go early, you can only go to the central street, Hagia Sophia, the flood control tower, Sun Island, Long Ta, Tiger Forest Park and other scenic spots in Harbin. It will take about 2 or 3 days. If you go after the opening of the ice lantern, you can play 3. Changbai Mountain is in Jilin Province, on the border between China and North Korea, and Mohe River is in Heilongjiang Province, on the border between China and Russia. The two places are far away, and Harbin is the transit point. If the plane goes back and forth, it will take about 2 or 3 days for each place. If it is by train, it will take at least 3 or 4 days for each place. The recommended route is Guangzhou-Harbin-Mohe-Harbin-Changbai Mountain-Guangzhou. If you wear clothes, it is recommended to wear more, mainly thick down jackets or fur coats. You can also wear professional stormtroopers with fleece and a down liner inside. The shoes are preferably non-slip and waterproof snow shoes, preferably one size larger, with a thick insole. In addition, hats and gloves are necessary when you get here. You can look for the strategy now, you can make the route and prepare the equipment, but the specific details will have to wait until November and December. Have a good time.