What are the disadvantages of San Mao Tour?

Sanmaoyou has no shortcomings, but advantages: 1 Automatic trigger explanation of patent micro-positioning rectification: through the self-patented GPS+ micro-positioning scenic spot sightseeing technology, it is realized that you can go and listen to the scenic spots; Doctor 2. AI intelligent identification of museum exhibits: mobile phones can quickly identify exhibits and explain them automatically. Make your trip to the museum no longer stupid. 3. Exquisite hand-painted scenic spot map: a hand-painted tour guide map with three-dimensional real-life effect allows you to visit in an orderly manner.