No.

According to ZCOOL's query, in "Food Adventure", Qiaoqiao and Doudou are not siblings, they belong to different characters. Qiaoqiao is one of the main characters. She is a brave, smart, and kind-hearted female pirate, while Doudou is Qiaoqiao's pet and assistant. He is a cute little turtle. Although Qiaoqiao and Doudou have a deep friendship and supportive relationship, they are not related by blood.

"Food Adventure" is an animated film based on food, directed by Sun Haipeng. Initially, it was just a short video of steamed buns, and later added noodles, sushi and other foods.