As larger and larger unified states gradually emerged in what is now China, the myths and legends of different regions were gradually amalgamated together. Seafaring was a highly dangerous activity; many who set sail in search of immortality failed to return, and this dampened enthusiasm for such endeavors.
隨著天下逐漸統一，各區神話相互融合；加上海上活動危險性高，求仙往往去而不返，受重大挫折。