The eldest son is Chun Lei, the second is Yu Xia, the third is Qiu Shuang, and the fourth is Dong Xue. What's the father's last name?

The eldest son is Chun Lei, the second is Yu Xia, the third is Qiu Shuang, and the fourth is Dong Xue. These names are related to four seasons and weather phenomena, so it can be inferred that dad's surname may be related to nature, season or climate.

First of all, we can consider it from the perspective of the four seasons. Spring thunder, summer rain, autumn frost and winter snow represent four different seasons respectively. These four seasons play an important role in the traditional culture of China, symbolizing the beginning, growth, harvest and rest of life respectively. Therefore, the father's surname may be related to one of the four seasons.

Secondly, it can be considered from the perspective of weather phenomena. Spring thunder, summer rain, autumn frost and winter snow are all common weather phenomena in nature, representing lightning, rain, frost and snowflake respectively. These weather phenomena also have rich symbolic meanings in the traditional culture of China, such as spring thunder symbolizing new life and strength, wet and energetic summer rain, autumn frost symbolizing harvest and maturity, and pure and quiet winter snow. Therefore, the father's surname may be related to these weather phenomena.

Based on the above analysis, we can speculate that dad's surname may be "Ji" or "Tian". These two surnames are related to the four seasons and weather phenomena respectively, which accords with the information given in the title. The actual situation may be different.