From July 10 to July 16, how to return from Chongqing to Harbin in about 10 days?

Now there is a through train from Chongqing to Harbin, which takes 49 hours. Hehe, there should be more than 500 sleepers. Air tickets will increase in July, so it is cost-effective to take the train. If you live with friends or relatives in Harbin, it doesn't cost much. If you stay in a hotel, you can consult Sung Hoon Business Travel Network, where there are the cheapest hotels in Harbin. You can also contact me. Hehe, after all, he is a fellow villager.