Why do monks ask for rice from house to house in the countryside?

In Buddhism, whether monks will starve to death after becoming monks is related to blessing. Temples are supported by ten parties, and the rise and fall of temples are determined by the wealth and ability of believers. Then people who have never been with this temple before can't eat and live in it. Giving alms was a rule of daily life during the Buddha's period, and giving alms in turn begged for food to subdue his arrogance. Don't go to rich and poor families. Then it is stipulated that you can't starve a family of seven or more, and cultivate humiliation and concentration. Failure to do so means that there was no good relationship in the past. Take giving as an example.