The middle period ( 2600 to 2000 BC ) of the Yellow River culture in the late Longshan area is simultaneously with the classic Shandong Longshan culture . The middle period ( 2600 to 2000 BC ) of the Yellow River culture in the late Longshan area is contemporaneous with the classic Shandong Longshan culture .
Tempoh pertengahan (2600 hingga 2000 SM) budaya Sungai Kuning di kawasan Longshan lewat adalah serentak dengan budaya Shandong Longshan klasik. Zaman pertengahan (2600 hingga 2000 SM) budaya Sungai Kuning di kawasan Longshan lewat adalah sezaman dengan budaya Shandong Longshan klasik.