Dali nestling in the arms of the Diancang Mountain 400 kilometers west of Kunming , is linked to the outside world by airlines and express ways . The weather there is mild and it is spring all the year round . Dali is known all over the world for its graceful scenes and sights . ?The green mountains are encircled by rivers , and the city is encircled by mountains ?., as one line goes . ?The mountains aree perpetually green in all four seasons ? , says another , The Cangshan Mountain and the Erhai Lake are perhaps the most fascinating of all the sceneries in the city .