Joke Collection Website - Mood Talk - Can you tell me what a hot treasure is? How to use it? Thanks.

Can you tell me what a hot treasure is? How to use it? Thanks.

At present, I have only seen round red ones, big and small. They will heat up after being powered on. They are a good helper for keeping warm in winter, but they don’t keep warm for long, only about an hour! But it is economical! The big one is only about 30 to 40, and the small one is about 15 to 25!