During the Han dynasty era, this notion of "China = Tenka" changed under the influence of actual sakuho relations, and the contemporary notion of "Tenka," which means the world including other surrounding ethnic groups, was established.
漢代になると、この「中国＝天下」概念が現実の冊封関係に影響されて変容し、周辺諸民族をも含めた現代的意味での世界として「天下」概念が成立した。