Sweet potato cassava potato, the heart has its own, the next sentence is the love has returned. According to the query related information, sweet potato cassava potato is the front vocabulary, can be ignored, the heart belongs to, the love has returned is a fixed collocation sentence, the heart belongs to, the love has returned means that the heart has already had a place to entrust (people), the feelings have also had a place to go, the heart has been returned to all of him, no longer subject to the influence of any other aspects, can not tolerate any person, the feelings are also the same, to the heart of the person, love The same is true for feelings, the heart is given to the person, the feelings are also invested in the body, feelings also have a return place, that is, life has already had a place to go.