Qian Xuesen, Qian Weichang and Qian Sanqiang are descendants of Qian Liu?

Yes, it is a family.

Qian is Qian Sanqiang's father, a linguist and a man of the May 4th Movement. Qian Sanqiang, a nuclear physicist, is the father of two bombs. Famous historian Qian Mu. Qian Zhongshu, the nephew of Qian Mu, is a master of Chinese studies. Qian Weichang, nephew of Qian Mu, nuclear physicist and founder of the two bombs. A group of great historical figures and Qian Weichang's cousin: Qian Yongjian's 2008 Nobel Prize in Chemistry.

They are in front of my house, Qian Zimu, from Wuxi, Jiangsu. In the 21st year of Guangxu reign in Qing Dynasty (A.D. 1894), he was born in South Xiang Yan Township, Dangkou Town, Wuxi County, Jiangsu Province on July 30th. Formerly known as Qian Sirong, 1902 was renamed Qian Mu when he entered primary school as a teacher. Pen names Gong Sha, Forgetting to Learn Zhai Zhu, etc. Now it is the site of Hongshan, and it is the era of Goujian. Wuyue's Tomb. Physical objects unearthed in China for the first time.