The specific tense in the sentence “she’s been to China” is the present perfect tense.

Scenario: Imagine that Sarah, a friend of yours, recently returned from a trip to China. You meet her at a café and ask her about her travels. Sarah responds, “I’ve been to China.” In this scenario, Sarah is using the present perfect tense to indicate that she has had the experience of visiting China in the past, and it is still relevant to the present moment.