Is Li Chu the daughter of Situziyu and Chu Yihan?

I think so, too. In the first season, Chu Hanyi met the Stuart brothers, which was the plan of Hunter Head. Han Yi took poison to form blood poison before, and was hypnotized by hunters, so his blood attracted the Stuart brothers, but no one thought that Yu Zi had a relationship with Han Yi and gave birth to a daughter, which led to a chemical reaction, so Han Yi's blood poison was neutralized on Stuart Ziyu. In the second season, only Yu Zi was fine. Perhaps when Stuart Mu Yan led the family to negotiate with vampire hunters, Wei Tuo really wanted to promote peace. He thinks that Wei Tuo was betrayed by the hunter leader and was seriously injured. He was saved by his elder sister Stuart Mulan and misunderstood Wei Tuo. At this time, Han Yi was pregnant. At that time, Yan was not informed in time to save the child, and his blood poison may be the antidote to his daughter's blood. Because he is a hybrid of vampire and human, Wei Tuo may know this fact. I have been looking for the Stuart brothers and told my son that Yuchu is his daughter and can detoxify. In the second season, Li Chu took the necklace that Stuart Yu Zi gave to Chu Han Yi, which was proved by the highest invitation he was born with.