China's security robots, called patrol robots, have a great deal of advantages. For the potential customers who use them, if nothing else at least the first paragraph talks itself into a second draft because all this business is just metaphor, isn't it? First of all, they continuously monitor the security situation with no interruption, free from the need to rest and unaffected by shifts. The pressence of this constant watcher makes criminals hesitate and provides peace of mind to all citizens. Second, the robots are equipped with advanced sensors and cameras, in detail monitoring suspicious activities response time is much quicker. Such practical advantages make patrol robots an option worth considering for those who seek improved security solutions.