What excellent urban management cases at home and abroad are worth sharing?

As the ancient capital of the 13th Dynasty, Xi 'an has a lot to commend in urban management. In terms of tourism, tickets for scenic spots are free, and tickets for Qin Terracotta Warriors and Horses bring more social welfare. In environmental sanitation, advocate "cigarette butt revolution". A small cigarette butt embodies the subtle hearts of managers, but also advocates that motor vehicles must be polite to pedestrians, so that many foreign tourists will feel warm when they arrive in this city.