My Sister's Best Friend Is the Little Princess of Jinyang in the Tang Dynasty

When Gu Xingyao, a 4-year-old modern wealthy man who loves to be mischievous, chivalrous and self-proclaimed [Yao Yao General], picks up the frail and timid 3-year-old Jinyang Princess Xiao Sizi from the Tang Dynasty during a thunderstorm night, what kind of sisterly love story will there be between the elder sister and the younger sister? When the 18-year-old quasi-college brother Gu Xingchen meets Li Lizhi, the eldest princess of Changle who traveled through time and space looking for his sister, he falls in love at first sight and lasts for thousands of years. What kind of love story will there be between them? Gu Xingyao: "Hey! It's so boring. When will mommy give me a baby sister?" "Nezha has his apprentices, Hua Mulan has his followers, and I, General Yaoyao, am alone!" There was a muffled sound in the garden. "Huh?" The little girl's ears stood up, she stood up and stood on tiptoe to look under the window. The dark garden was blurred by the rain, and something faintly fell next to the rose bushes. "A thief?" Gu Xingyao's eyes lit up and she became energetic! It's time for General Yaoyao to protect his homeland! "What a monster! Take this general's sword!" Gu Xingyao ran to the rose bushes. The rain soaked her floral pajamas, and her ponytail fell down and stuck to her head. She raised her wooden sword and pointed it at the group behind the flowers... Huh? That small group was huddled in the mud, soaked all over. Gu Xingyao tilted his head and lowered his wooden sword. Through the light of lightning, she could see clearly - it was a child. Gu Xingyao was stunned for two seconds. Then—— "Wow! Sister!" Gu Xingchen: "You... Look very good today." Li Lizhi's ears turned red. "Hmm"