First of all, you should firmly believe that you are Manchu. If you are not Manchu at all, there will be no dispute between elders about whether you are Manchu or Han.

There are many Manchu surnames in Xinbin area, and more than one changed his surname to Li. So what's your old surname? It's best to provide more clues, such as which flag your family is from, or which village in Xinbin County? Have you immigrated before? Are there any other Manchu people in the same village? What flags are they? What's the old surname?

Now I can only tell you the following possibilities according to the surname provided by Li You:

Zhekeda: This clan mainly lives in Songjia, Sandaogou and other places in the south of Xinbin, as well as Huanren and Xiuyan counties. Most of them are Manchu yellow flags or white flags.

Fu Cha: This family is located in Shangjiahe and Qimu Town, and most of them are Manchu red flags or blue flags.

Li Fuzhu: This family is located in Houlou Reservoir in the north of Xinbin, and some of them belong to Manchuria Huangqi.

Li Jiashi: This family is located in Xinbin County, Ma Erdun, Dahuashu and other places, belonging to Manchu Yellow Banner.