"Don't be afraid, Bao'er. Ning Niang will protect Bao'er well."
6-Year-old Yu Baoer met 4-year-old Fan Changning. They were childhood sweethearts and childhood sweethearts.
Many years later, when Yu Baoer ascended the throne and proclaimed himself emperor, the first thing he did was to "make Changning's sister queen"
Childhood sweethearts meet each other, a date between young emperors and empresses