Actually, in this case, I think the security measures are textbook-level. First of all, as the security guard of the mall, he really has the obligation to refuse these small vendors to enter the mall to sell their own things, and he really has the obligation to maintain the order of the whole mall. If everyone enters the shopping mall and sells it at will like this old lady, the whole shopping mall will be like a vegetable market.
But then the security guard felt that the old lady was old and hunched. Usually, she must have spent a lot of time on these vegetables at home. Now she is counting on selling these dishes for pocket money. The security guard can't bear to see the old man disappointed, so he took the initiative to pay for all the dishes. For security guards, this is actually killing two birds with one stone, because it not only solves the order problem of shopping malls, but also solves the vegetable problem of the elderly.
Actually, I'm thinking that if the security guards in every shopping mall can be as conscientious and considerate as this one, then I don't think there will be so many contradictions. Of course, we can't kidnap morally, we can't use this security standard to measure all security guards, and we can't let all security guards take the initiative to buy things from other vendors like this security guard, but this behavior of this security guard is really worth promoting.