Homemade chili sauce will last 2-3 weeks in the refrigerator in an airtight container. You can also freeze it for up to 6 months.
All types of paprika are made from peppers belonging to the Capsicum annuum family. However, hot paprika is made using spicier peppers and will include the inner piths.
I think that by now I’ve probably convinced you of it’s awesomeness, so let’s get started, shall we?
The drying process is crucial in preserving the flavor and heat of the chillies. The chillies are typically dried in the sun or using specialized drying machines to ensure they are completely dehydrated. This process can take several days to complete, as it is important to dry the chillies slowly to maintain their flavor and heat levels.
dried chilli padi manufacturers

So the question of what is a good paprika substitute comes down to what dish you're preparing and how much paprika that dish calls for.
China is famous for its culinary delights, and one of the key ingredients found in many traditional Chinese dishes is dried red pepper pods. These spicy and flavorful pods are used to add heat and depth to a wide variety of dishes, making them a staple in Chinese cuisine.