"顔氏家訓" written by Yang Zhitui is an ancient Chinese work on ethical and moral principles. This book consists of two volumes and teaches readers important life lessons through the author's wisdom and personal experience. In his work, the author adheres to the principle of mutual respect and honesty in relations between people. "顔氏家訓" helps to understand and improve one's own soul, teaches to be wiser and more tolerant. This book is eternally relevant, because the moral values it highlights are passed down from generation to generation.