* Yung-lo could be a misspelling of Yongle Emperor, a prominent emperor of the Ming Dynasty in China (1402–1424). He was known for his expeditions and maritime voyages.
* Kouan-yo is not a recognizable historical figure or place.
Could you please provide more context or clarify the names you're referring to?
For example:
* Could you provide the full names of the figures or the event you are referring to?
* Can you give any additional details about the historical context or the situation you are interested in?
With more information, I can help you find the answer you are looking for.