What do you think is the biggest in the world?

The sentence "My mother's uncle is the biggest in the world" means that my mother's brother, that is, my uncle, has the highest status and is most respected in the family relationship. This is because my uncle is the largest male member of my mother's family and one of my closest relatives. In terms of blood relationship, the blood relationship between uncle and mother is the most direct, so he will care more about his mother's family than other relatives and have a great influence on all family affairs. Besides, uncles are usually the actual fathers of nephews and nieces. They play an important role in the family and are responsible for the contact between some families and society. Therefore, respecting the old and loving the young is a traditional family value.

In a word, the sentence "My mother's uncle is the oldest" emphasizes the important position of my uncle in the family, and also reflects the intimate relationship and respect between relatives in China's traditional family values.