C470 Follow the Clues

After hearing what Nannan said, Yizhou thought it over and realized she had a point. After all, Mrs. Zhang was the one handling everything, and her loyalty to Nannan was unquestionable. If it wasn't something in the diet causing issues, then what could it be?

Yizhou fell into deep thought, and Elder Fei beside him looked equally troubled. The doctor suddenly spoke up.

"I previously asked Mrs