Where can I learn to cook roast duck?

I think many people are familiar with roast duck. After all, there are still many roast ducks on the market now. After all, roast duck is delicious, and everyone likes to eat it, so many people want to learn roast duck technology, but they don't know where it is authentic. In fact, it has always been a good choice. First, you can try a brand at that time, and then go to that brand to see if it tastes really good. If it's really delicious, you can learn. After all, whatever you choose, you need to investigate and try.