Fan Ruoruo was Fan Jian's biological daughter. Her birth mother was Fan Jian's first wife. Her identity and name were not mentioned in the search results provided. In order to avoid the Qing Emperor's pursuit, Fan Jian sent Fan Xian and Fan Ruoruo to the countryside to be raised. Therefore, Fan Ruoruo was Fan Jian's biological daughter.

When she was a child, Fan Ruoruo was played by Zhang Wan 'er.
Fan Ruoruo was Fan Jian's biological daughter. Her birth mother was Fan Jian's first wife.
Fan Ruoruo's childhood character was Zhang Wan 'er.
Fan Ruoruo's childhood character was Zhang Wan 'er.
Fan Ruoruo's childhood character was Zhang Wan 'er.
Fan Ruoruo was not Liu Ruyu's child. Fan Ruoruo was born to the Eldest Mistress of the Fan manor, and Liu Ruyu was Fan Jian's concubine. Fan Ruoruo's mother was Fan Jian's wife, and Liu Ruyu had given birth to Fan Sizhe. Thus, Fan Ruoruo was not Liu Ruyu's child.
Fan Ruoruo was not Liu Ruyu's child. Fan Ruoruo was born to the Eldest Mistress of the Fan manor, and Liu Ruyu was Fan Jian's concubine. Fan Ruoruo's mother was Fan Jian's wife, and Liu Ruyu had given birth to Fan Sizhe. Thus, Fan Ruoruo was not Liu Ruyu's child.
Fan Ruoruo was Fan Jian's biological daughter in Joy of Life. She was the daughter of Fan Xian's adoptive father, Count Sinan, Fan Jian. In order to avoid the Qing Emperor's pursuit, Fan Jian sent Fan Xian to the countryside to be raised. At the same time, he also sent his own daughter, Fan Ruoruo, to the countryside to be raised with Fan Xian. Thus, Fan Ruoruo and Fan Xian were brother and sister in name.
In Joy of Life, Fan Ruoruo was played by Zhang Wan 'er when she was a child.