My suggestion:
1. Route: Starting from Guangzhou, take Nanning and Kunming to Dali, Lijiang and Shangri-La and enter Tibet via Line 214. Pass through Yanjing, Mangkang, Zuogong and Linzhi to Lhasa. When you visit Yanghu Lake and other places in Tibet, you should take the Qinghai-Tibet Line and pass through Namco, Naqu, Golmud, Qinghai Lake, Xining, Lanzhou, Xi &;an, Wudang Mountain, Changsha and Guangzhou.
2. It is suggested to extend the time by more than 20 days, and 25 to 30 days is the best.
3. Road conditions. The family car can go all the way, and your car can definitely go. I walked this route once in April this year, from Changsha to Kunming, the back of the return route is the same, and I went as far as the border of Nepal, and returned after playing in Nepal for a few days. If you don&;t take the Qinghai-Tibet line to return, you can take the 318 line to Chengdu to return.
4. Eat, drink and live: With a car, the place to live is not too difficult. We live there when the car goes there. We have lived like this all the way. Don&;t live in the downtown of Lhasa. It is more affordable to live farther away with a car.
5: Pay attention to safety all the way, and the car must not go too fast! ! Remember to look at my travel notes.