When shopping for paprika in China, it is important to consider the quality of the spice before making a purchase. Higher-quality paprika tends to have a more vibrant color and a stronger flavor, making it worth the slightly higher price tag. It is also important to store paprika in a cool, dark place to preserve its flavor and color for longer.

If it's just a small amount, like half a teaspoon or less, you could conceivably get away with substituting chili powder, which is mainly paprika along with other seasonings such as garlic, salt, cumin, and a bit of cayenne. It's slightly hotter than plain paprika, but not overwhelmingly so. Some other ground red peppers like ancho chili powder, chipotle powder, or hot sauce would also work. Chili powder will also suffice if the paprika is just being used for a garnish. With these spices, you can go with a 1:1 ratio of the substitute spice to the paprika amount needed.

In rare cases, allergic reactions to paprika and bell peppers can occur, causing symptoms such as hives, itching, swelling, and difficulty breathing. Individuals who experience these symptoms after consuming paprika or bell peppers should seek medical attention immediately.