Vanilla Niang feng shui

The warm spring movie version has the plot you described according to the plot introduction.

As the days passed, Vanilla's stomach remained motionless. Vanilla Niang heard that eating grasshoppers can cure her illness, but Zhu Bao ignored her. Hearing this, Xiaohua decided to secretly go to Tian Li to catch grasshoppers after school every day, and borrowed many bottles from her fat aunt. Once, she came back late from school. Grandpa blamed Xiaohua and asked her if she had played truant. In order not to make grandpa feel sad because he mistakenly thought he was playing truant, she told him about it. In the evening, Xiaohua took out a dozen bottles of grasshoppers collected and put them on her aunt's kang, telling her that they were for him. She said that after eating these grasshoppers, she would catch them again, hoping that her aunt would have a little brother, a treasure column and herbs after eating them.