To accurately answer your question regarding which landform corresponds to the number 5 on the map, I would need to see the specific map you are referencing. Since I can't view images or diagrams, I would recommend looking for any noticeable geographical features associated with these landforms:
- Gobi Desert is a vast desert region in Northern China and Southern Mongolia.
- Malay Peninsula is a peninsula located in Southeast Asia.
- Korean Peninsula is located in East Asia, bordered by the Yellow Sea and the Sea of Japan.
- Honshu is the largest island of Japan.
If you can provide more context or describe what the map indicates about number 5, I might be able to help you deduce the answer!