What is the finale of Princess New Zhu Huan? Has the swallow returned to the palace?

No, Swallow and Sunny went to Dali, Yongqi went back to the palace and signed a two-year contract with Swallow. He returned to the palace and left a child for Xinrong. Finally, Xiao Jian and Sang Ni got married and raised a child named Little Sun. Finally, Sang Ni was pregnant with a second child. Xinrong finally gave birth to a son named Mianyi. Yongqi left the palace and go to dali found the swallow. The final ending didn't mention them.