Is Lhasa lively? What are the hottest places? What are the places with the largest number of Han people?

Many, there are Han people everywhere.

Lhasa, bounded by Potala Palace, is divided into new city and old city. The traffic is mainly three horizontal and four vertical, and the old city radiates around Jokhang Temple, mainly some temple attractions. The new town is to the west of Potala Palace. There are many modern buildings, most of which were built later. Now a new area is being developed near the railway station, which seemed to be almost completed when it passed last year.