What form does a tourist attraction use to express filial piety, which can touch the hearts of tourists and make them moved?

Let the tour guide talk about how to do some simple filial piety in the process of visiting the park. For example, in the process of visiting parks or scenic spots, let tourists call the elderly at home on the spot. Sometimes, no matter how much you say, no matter how beautiful you say, it is not as good as a simple action. Often make a phone call to greet the elderly at home, which is the simplest, but it is a small detail that few people pay attention to. Let tourists complete their filial piety on the big phone.