1, Kuvaldahala was found in Tongdian of Qing Dynasty, with a simple clan and a surname of Manchu Eight Banners, also known as Couard Na, who lives in Hada (Kaiyuan East, Liaoning Province). The Chinese character in the crown is surnamed Sang.

2. Seljihara, also known as Saki, was found in the Tongdian of the Qing Dynasty, with a family name of Manchu Eight Banners, and lived in Shihe Village of Sailingji (now to be tested). The Chinese character in the crown is surnamed Sang.

3. Singier Hala, whose ancestral home was in Hubei, later changed her surname to Shang and Sang, and is found in the annals of emperors, genealogy and Manchu Eight Banners. His famous figures are: Daoguang Yufei and Yun Qi Weihai Bao.

Ukulehara can be found in the records of emperors, imperial clan and Manchu Eight Banners. Also known as Wuseli, Manchu language is "Fine Scale Shade", the oldest surname of Manchu, and Jin's old surname is "Wugulun". He lived in Heilongjiang, and later his China surname was changed to Shang, Liu, Wu, Li, Northeast and Sang.

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The same surname may belong to different flags. For example, Niu Kelu has this surname in yellow, yellow and red flags, and they belong to the same clan. So I can't confirm what you said about the flag of Sang surname. I can only provide sang Lao's surname.