What is the historical truth of Princess Zhu Huan?

The real historical fact is this: Qianlong once adopted a folk woman as his adopted daughter, but because she was not royal orthodox, she was buried next to the imperial tomb in Beijing and named it "Princess Tomb". Qiong Yao overheard it and was inspired to write it down. However, there really is a "Wei Zi Gege", which is the daughter of Gan Long. Because it was inconsistent with history, her descendants filed a lawsuit against Qiong Yao. That's all I know.