How many sons does Xu Fengping have?

Xu has two sons, Xu Yulin and Xu Yulin. Xu is the inheritor of China traditional culture. He passed on the ancient traditional culture of China to his two sons. Xu Yulin has been devoted to the study of China traditional culture. He is a researcher of China's classical literature. He has published a large number of works on China's classical literature and is recognized as an outstanding scholar in the field of China's classical literature research. Xu Xiaojie also inherited his father's tradition. He is a famous researcher of China traditional culture. He has published many books about China's traditional culture and is regarded as an authoritative expert on China's traditional culture research. Xu's two sons are well-known scholars who have great influence in China's cultural circles. Their achievements spread the traditional culture of China more widely.