When was Song's birthday?

Eight years. By questioning the novel "You broke your promise", Song's "Think about it, Happy 23rd Birthday" was the year when Qing Yu was born. Song set off fireworks for her 23 times, and this year is his eighth birthday. Novel is a literary genre that focuses on portraying characters and reflects social life through complete stories and environmental descriptions. The word "novel" comes from Zhuangzi Foreign Things.