土裝在另一個胃裡

Missing, extremely new, or very obvious to obtain.

The Chinese title is a reference to 甜品装在另一个胃里 (roughly translates to "Second Stomach for Sweets"). It's a common phrase in ACG (Animations, Comics, and Games) and is used in three situations. First is when one doesn't gain weight no matter how many sweets they eat. Second is when one wants to eat sweets but is afraid of gaining weight and uses "Second Stomach for Sweets" as an excuse to eat sweets. The third is when one wants to eat sweets after having eaten a full meal, indicating that that they can eat more. It's also a reference to "dessert stomach" or "second stomach for dessert," a phenomenon caused by sensory-specific satiety. This suggests that the more we eat one type of food, the less appealing and boring the flavor becomes. So switching to a different food is suddenly more tempting, making it seem like we do have an extra stomach just for dessert.