From the early Qing Dynasty, Shandong people began to travel eastward. Today, more than 60% of the northeast people are descendants of Shandong immigrants in the past 200 years, and more than half of the local people in Liaodong are descendants of immigrants from Kangxi Yongzheng Qianlong to Shandong.
In a word, about three-quarters of the northeast people are descendants of Shandong people, so the difference between the two sides mainly comes from the different living environment.
The height, face shape and average weight of men in Shandong and Northeast China are similar, but people in Northeast China are whiter because of climate and diet (rice in Northeast China and noodles in Shandong).
Extended data:
"Running eastward" is the abbreviation established by the migration movement from Zhongshan East to Northeast from AD 17 to the 20th century. In 1930s, the "de-orientalization" immigration tide stopped only because of the Japanese invasion of Northeast China after the September 18th Incident.
Throughout the history of "Crossing the Kanto", the number, scale and duration of its immigrants are one of the largest immigration movements in China's immigration history.
The "Guan" in "Braving the Guandong" refers to Shanhaiguan. In modern history, most of the refugees in Shandong province went to the northeast "to the east" through Shanhaiguan.
References:
Baidu Encyclopedia-Go to the East