You can refer to this during the novel if you ever want to refresh your memory about the family tree. I would have gladly uploaded an illustration if I could. 

SONG FAMILY: 

Song Luli (Main Character)

Song Zhen (Twin Brother)

Song Meiling (Older sister)

Song Sheng (Father)

Qian Meigui (Mother)

Song Rui (Grandfather) 

Song Ren (Aunt; sister of Song Sheng)

LONG FAMILY:

Long Jie (Main Male Character)

Long Huojin (Father)

Xue Guangli (Mother)

Xue Teegan (Maternal Aunt)

Yin Shou (Uncle; Husband of Xue Teegan) 

Yin Hao (Cousin; Son of Xue Teegan and Yin Shou)

Long Yuntian (Grandfather) 

Long Bolin (Paternal Uncle)

SU FAMILY:

Su Xiang (Song Luli's first cousin)

Su Chen (Adopted brother; no blood relation to Su Xiang; his mysterious birth is revealed in the novel)

Su Feng (Father) 

Song Ren (Mother; Song Ren is Song Luli's aunt) 

Song Sheng (Su Xiang's Uncle) 

Song Zhen (Cousin)

Song Meiling (Cousin)

Qian Meigui (Aunt; husband of Song Sheng)

Song Rui (Grandfather) 

SIDE CHARACTERS: 

Zhang Enyu (International student & Instructor)

Yu Haoran (Antagonist)

Xun Yaozu (Antagonist)

Lu Zihan 

Xun Xiaoli (Former Princess of the Pheonix Flock)

Shi Yen (Queen; Empress of the Underworld): Shi Yen is the main character in my other novel, "Something Beautiful and Wicked."